API Flanged Safety Relief Valves Series 526 API CATALOG. LESER worldwide. The-Safety-Valve.com. The-Safety-Valve.com

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1 LESER UK Bristol, United Kingdom André Ramseyer AG Flamatt, Switzerland API LESER worldwide Hong Kong LESER Shenzen, China API Flanged Safety Relief Valves Series 526 LESER Polska Poznan, Poland LESER S.A.R.L. Toulouse, France LESER LLC Charlotte (NC), USA PROTEGO-LESER do BRASIL Rio de Janeiro, Brazil LESER representative LESER LLP Singapore LESER Office Middle East Bahrain FAINGER LESER Valves Mumbai, India LESER stock and local assembly CATALOG API Catalog Edition September 211/ The-Safety-Valve.com LESER GmbH & Co. KG 2537 Hamburg, Wendenstr Hamburg, P.O. Box Fon +49 (4) Fax +49 (4) The-Safety-Valve.com E

2 NH 3 HCL Product Range LESER Safety Valves for every industrial application API High Performance Series 526 Type 526 Compact Performance High Efficiency Clean Service H 2 SO 4 HNO 3 Critical Service Modulate Action Best Availability

3 Contents General Cap H2 Closed bonnet Plain lever H3 Closed bonnet Chapter/Page General /1 Applications, General design features /2 Valve finder /3 How to use: Signs and symbols, Flange drillings and facings /5 How to use: Selection charts /6 How to use: Capacity sheets /7 LEO S/G /9 LEO L /1 Sour gas service /11 Type 526 1/1 Materials How to Order Example for numbering system Article numbers Overview Dimensions Metric Units US Units Weights Metric Units US Units Orifice D T Selection chart Article numbers, dimensions and weights Pressure temperature ratings 1/2 1/4 1/6 1/8 1/1 1/12 1/14 1/15 1/16 1/16 1/17 1/18 Flange drillings 1/72 Outlet with flange rating class 3 Overview 1/74 Packed lever H4 Closed bonnet Options 99/1 Caps and levers 99/2 Caps and levers bolted 99/4 Metal seat 99/6 Soft seal disc 99/8 Soft seal selection 99/1 Balanced bellows, Bug screen 99/12 High temperature equipment 99/15 INCONEL X-75 spring 99/16 O-ring damper 99/16 Lift indicator 99/17 Heating jacket 99/18 Plain lever H3 Open bonnet Chapter/Page Type 526 Flange facings 1/76 Spare parts 1/77 Available options 1/86 Approvals 1/87 Capacities Steam Air Water [Metric Units + US Units] [Metric Units + US Units] [Metric Units + US Units] 1/88 1/9 1/92 Determination of coefficient of discharge K dr /a w 1/94 Cap H2 Closed bonnet Options Type 526 D E F G H J K L M N P Q R T

4 General General Information LESER API Safety Valves The API product group represents 3 Full range of spring loaded safety valves acc. to API State-of-the-art design from the safety valve specialist 3 Competitive solutions for the API market LESER s API safety valves Are designed to meet all applications which require API. Open rapidly with an overpressure of max. 1 % to the full design lift. Have a maximum blowdown of 7 % for steam/gas service and 2% for liquid service. Are developed in a close cooperation with plant engineers and service specialists. Serve for protection of processes and equipment. Are approved by all important approval organisations worldwide which ensures the worldwide applicability e.g.: European Community: CE-marking acc. to Pressure Equipment Directive (PED) 97 / 23 / EC and EN ISO USA: UV-stamp acc. to ASME Section VIII Division 1, National Board certified capacities Germany: VdTÜV approval acc. to PED, EN ISO , TÜV SV 1 and AD 2-Merkblatt A2 Canada: Canadian Registration Number acc. to the requirements of particular provinces China: AQSIQ based on the approval acc. to ASME Section VIII Division 1 and AD 2-Merkblatt A2 Furthermore, all LESER API safety valves are designed, marked, produced and approved acc. to the requirements of the following regulations (directives, codes, rules and standards). EN ISO , EN /-2, EN 192 Part I and II flanging ASME PTC 25, ASME-Code Sec. II, ASME B and ASME B16.5- flanging, API Std. 527, API RP 576 AD 2-Merkblatt A4, AD 2-Merkblatt HP, TRD 11, TRD 421, TRD 721 /1

5 General Information General Applications General Design Features LESER API Safety Valves offer ultimate protection against overpressures in all applications for steam, gases and liquids. LESER s API Safety Valves cover a large variety of types, materials and options to fit any application: LESER s API Series 526 Safety valves present the simple safe solution for heavy duty applications, such as crude oil extraction, transportation and processing in Refineries Chemical industry Petrochemical industry Oil and gas Onshore and Offshore Vessels and piping systems Blow-down systems Storage tank farms Design fully in accordance with API 526 for easy interchangeability Complete API 526 range: valve sizes 1" through 8", orifice D through T Materials: WCB, WCC, CF8M, WC6, LCB, LCC, and a wide range of special materials to fulfill the requirements of critical applications Special B 3 design for high back pressure applications and material requirements far beyond API Standard Fool proof design with fewer parts for built-in safety Integral cast support brackets for easy handling and safe installation Open or closed bonnet, packed or plain lifting lever or gastight cap Flanged connections according ASME and DIN guarantee a worldwide applicability One design and spring (single trim) for steam, gas and liquid applications reduces the number of spare parts and ensures low cost maintenance management. One-piece spindle reduces friction which leads to high operation accuracy Self-draining body design, avoids residues and reduces corrosion Horizontal installation LESER s API Safety Valves can be customized with a great variety of options, e.g.: Special connections specified by the customer for optimised adaptation to the plant. Stellited or hardened metal sealing for longer product life Soft seat solutions for superior tightness Balanced bellows for back pressure compensation Heating jackets for applications with high viscosity fluids Any and every part can be produced in special material exactly to meet customer specification requirements /2

6 General Valve finder How to find the right Product Group High operating to set pressure ratio, high backpressure or low total height? Yes High Efficiency Mediumcontrolled No Clean Service application? Yes Clean Service No Critical Service / highly corrosive application? Yes Critical Service No API specified application? No Steam, gas and liquid application with low capacity in relation to valve size? Yes Yes API Modulate Action Spring loaded Safety Valves No Orifice F High Performance Required Orifice letter? Orifice F Compact Performance Additional components beyond safety valves Yes Best Availability Changeover valve Bursting disc /3

7 Valve finder How to find the right API Safety Valve General Step Procedere Reference 6 LESER Type Determination of the code for lifting device Cap H2 Plain lever H3 Packed lever H4 Plain lever H3 Open bonnet Code for lifting device Lifting device H2 H3 H4 H3 Bonnet closed closed closed open WCB 1.619, WC , LCB CF8M Determination of: Selection chart Type 526 Orifice D 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 WCB X X X X X WC X X X X Specification table Article numbers, dimensions and weights Article numbers Flange rating class Article No. WCB WC6 T [ F] p [bar] T [ C] Valve size 1 D 2 1 D 2 1 D 2 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 Actual Orifice diameter d [mm] Actual Orifice area A [mm 2 ] Body material WCB Art.-No CF8M Art.-No Use 1 D 2 3 x 15 WC Art.-No LCB Art.-No p [psig] 3 Determination of the material CF8M CF8M T [ F] 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x X X X X X p [bar] Corrosive service Temperature < -29 C < -2 F T [ C] Application Temperature -46 to 343 C -5 to 65 F Non-corrosive service Temperature -29 C -2 F Selection chart CF8M p [psig] Selection chart CF8M LCB (ASME B16.34) Selection chart WCB/WC6 2 Determination of the required orifice letter (sizing) For Orifice > T see Type 441 XXL API RP 52 VALVESTAR (Sizing software) Capacity table Sizing, Selection and Installation of Pressure- Relieving Devices in Refineries Part I Sizing and Selection API RECOMMENDED PRACTICE 52 Capacities Steam Capacities for saturated steam according to AD 2-Merkblatt A2, based on plus 1 % overpressure. Capacities at 1 bar (14.5 psig) and below are based on.1 bar (1.45 psig) overpressure. ) Metric Units AD 2-Merkblatt A2 [kg/h] D E F G H Orifice d [mm] Act. Orifice dia. Act. Orifice area A [mm 2 ] LEOS/G* [inch 2 ] Set pressure [bar] Capacities [kg/h] Application data: Pressure, temperature Capacity Medium Steam Media Gases Liquids LESER Type 526 offers single trim for steam, gas and liquids in one design. How to find the right API Safety Valve /4

8 General How to use General signs and symbols * 3 This option is covered by standard design Available Not possible Signs and symbols for flange drillings and flange facings * ( * ) Standard design, no option code required Flange dimensions except flange thickness are in accordance with flange standard (e.g. ASME B16.5) Flange thickness is smaller (max. 2 mm), see Multiple pressure rating Flange drilling/facing is not possible Option code for flange drilling and dimension, e.g. H5 H5 (H5) [H5] Flange drilling as specified in flange standard Outer flange diameter, flange thickness and height of flange facing may be larger, see Dimensions Flange dimensions except flange thickness are in accordance with standard Flange thickness is smaller (max. 2 mm), see Multiple pressure rating Flange drilling as specified in standard / flange thickness may be smaller Outer flange diameter is smaller than required, but complete back side facing for nut is assured Option code for flange facing, e.g. L36 L36 Flange facing as specified in flange standard (e.g. Flange facing inlet Type B2 smooth finish ) General information concerning flange drillings and flange facings Flange dimensions of LESER Type 526 exceed flange dimension as mentioned in ASME / ANSI B16.5 and DIN EN 192. This exceedance is in accordance with API Standard 526, Section 2.4. Dimensions Multiple pressure rating Smooth finish Stock finish Dimensions: For some valve designs, the inlet raised face height may substantially exceed the nominal dimension specified in ASME / ANSI B16.5 (and DIN EN 192). Consult the manufacturer for exact dimension. The reason for this exceedance is: height of nozzle placed in the inlet of valve due to the outer diameter of the nozzle thread flange thickness has to be thicker than normal ASME / ANSI B16.5 and DIN EN 192 dimension to achieve the required pressure rating The flange standard shows the same drilling, facing and outer diameter for several pressure ratings, e.g. PN 16 up to PN 4 Due to the pressure rating of the casting LESER fulfills the requirements for flange thickness e.g. of PN 16 but not PN 4 The effective MSS SP-6 (Edition 21) does not mention smooth finish anymore. In MSS SP-6 (Edition 198) smooth finish is defined for finishes of contact flanges as 25 µinch (6.3 µm) AARH max.. LESER supplies flange facings according to ASME B , paragraph : Either a serrated concentric or serrated spiral finish resulting in service finish from 125 µinch to 25 µinch average roughness shall be furnished. This finish meets the requirements of MSS SP-6 (Edition 198), which is not valid anymore! Stock finish is not defined in any technical standard. If purchase orders show stock finish LESER supplies standard facing according to DIN or ASME (marked with * in table Flange facings of each valve series). Materials Please find below a summary of material codes at LESER. Please note that - for every body material an inspection certificate 3.1 according to EN 124 is available - many materials have a multiple inspection certificate 3.1. Material code Flanged safety valve body Body material is certified with 3.1 (EN 124) for the following materials DIN EN ASME xxx 2.xxxx Carbon steel WCB, WCC xxx 3.xxxx Low temperature carbon steel LCB, LCC, WCB, WCC xxx 4.xxxx Stainless steel CF8M (Charpy test at -196 C) xxx 7.xxxx High temperature carbon steel WC6 /5

9 How to use Selection charts General The pages 1/16 1/71 contain selection charts and specification tables. They specify important data about the valves based on the API 526 fifth edition 22 like Valve size Set pressure and temperature limits Body materials Back pressure limits Flange rating classes Procedure Step Procedure Reference 1 2 Determination of the required flow area and orifice letter (sizing) Determination of: Material Flange rating class Article No. API RP 52 VALVESTAR Sizing software Capacity tables (page 1/88 1/93) Selection charts (page 1/16 1/68) or Specification tables (page 1/17 1/71) 3 Determination of the material Specification tables (page 1/17 1/71) 4 Determination of the code for lifting device Specification tables (page 1/17 1/71) Type 526 Orifice D 3 Selection chart 5 15 x 15 WCB X WC6 4 3L x 15 See 3 x 15 3 x X 6 x X 9 x 3 See 15 x 3 15 x X 25 x X See 3 x X X See 15 x X X 6 5 WCB WC T [ F] p [bar] T [ C] p [psig] 1 Explanation No. Description Example Set pressure p bar 35 psig Temperature T 217 C 48 F Required orifice letter D Flange rating class 25 x 3 Material WCB Article No. (X = Code for lifting device) X /6

10 General How to use Sample Capacity sheet How to select capacities for steam: Type 526, Valve size 1 F 2 Type 526 Capacities Steam Capacities for saturated steam according to AD 2-Merkblatt A2, based on plus 1 % overpressure. 8 Capacities at 1 bar (14.5 psig) and below are based on.1 bar (1.45 psig) overpressure. Capacities for saturated steam according to ASME Section VIII (UV), based on plus 1% overpressure. Capacities at 2.7 bar (3 psig) and below are based on.27 bar (3 psig) overpressure. Metric Units 1 AD 2-Merkblatt A2 [kg/h] Orifice D E F 2 G H Act. Orifice dia. d [mm] ,5 28,3 Act. Orifice area A [mm 2 ] LEOS/G* ) [inch 2 ] Set pressure [bar] Capacities [kg/h] US Units ASME Section VIII [lb/h] Orifice D E F G H Act. Orifice dia. d [inch] Act. Orifice area A [inch 2 ] LEOS/G* ) [inch 2 ] Set pressure [psig] Capacities [lb/h] * ) LEO S/G = LESER Effective Orifice steam/gas please refer to page /9 Explanation Type 526, Valve size 1 F 2 No. Description Metric Units US Units Example 1 Code AD 2-Merkblatt A2 2 Orifice F 3 Actual orifice diameter d [mm] [inch] 18 4 Actual orifice area A [mm 2 ] [inch 2 ] LESER Effective Orifice LEO S/G [inch 2 ] [inch 2 ] Set pressure [bar g ] [psig] 1 7 Capacity [kg/h] [lb/h] Base of calculation see table page /8 /7

11 How to use General 8 Base of calculation Metric Units US Units Code Capacity calculation according to AD 2-Merkblatt A2 Capacity calculation according to ASME Section VIII (UV) Media STEAM (saturated steam) Standard conditions Steam table IAPWS-IF97 IAPWS Industrial Formulation for the Thermodynamic Properties of Water and Steam [kg/h] Steam table IAPWS-IF97 IAPWS Industrial Formulation for the Thermodynamic Properties of Water and Steam [lb/h] AIR Standard conditions C and 113 mbar [m n 3 /h] 16 C (6 F) [S.C.F.M.] WATER All Media Standard conditions 2 C (68 F) [1 3 kg/h] 21 C (7 F) [US-G.P.M.] Calculation pressure Set pressure plus 1 % overpressure Set pressure plus 1 % overpressure Calculation pressure for low Capacities at 1 bar (14.5 psig) and below are based on.1 bar (1.45 psig) overpressure. Capacities at 2.7 bar (3 psig) and below are based on.27 bar (3 psig) overpressure. Example Capacity calculation pressure Metric Units US Units Set pressure Capacity calculation pressure Set pressure Capacity calculation pressure 1 bar 1 bar + 1% overpressure = 11 bar 145 psig 145 psig + 1% overpressure = psig.5 bar,5 bar +.1 bar overpressure =.6 bar 2 psig 2 psig + 3 psig overpressure = 23 psig 5 LESER Effective Orifice Pressure relief devices may be initially sized using the equations shown in API RP 52, sections 3.6 through 3.1 as appropriate for vapors, gases, liquids, or two phase flow. These equations utilize effective coefficient of discharge (S/G.975, L.65) and effective areas (acc. to API Std. 526, Sixth Edition, April 29, table 1) which are independent of any specific valve design. In this way the designer can determine a preliminary pressure relief valve size. By using the LESER Effective Orifice the designer can directly select a LESER safety relief valve after calculating the oriffice letter. In this case, a verification of the sizing with the selected actual orifice and the rated coefficient of discharge is not necessary. LEO S/G LESER Effective Orifice (for steam, gas and vapor) [inch 2 ] refer to page /9 LEO L LESER Effective Orifice (for liquid) [inch 2 ] refer to page /1 For further information refer to LESER ENGINEERING at /8

12 General LEOS/G This table is based on the rated coefficient of discharge for steams and gases of LESER safety valves certified by ASME. The appropriated K-values are shown in the column K-value of the table. LEO S/G [inch 2 ] = A [inch 2 ]. ( K ),975 LEOS/G LESER Effective Orifice (for steam, gas and vapor) Orifice acc. API 526 Flange rating class Valve size d [inch] d [mm] K-value LEOS/G [inch 2 ] % of next higher orifice % of next lower orifice D.11 1.% 1.% D % 11.2% / 2 D % 11.2% / 2 D % 11.2% E % 1.% E % 1.% / 2 E % 1.% / 2 E % 1.% F.37 1.% 1.% / 2 F % 15.5% / 2 F % 15.5% G.53 1.% 1.% / 2 G % 1.7% G % 1.7% H % 1.% 15 3L 1 1/ 2 H % 12.% H % 12.% J % 1.% 15 3L 2 J % 1.7% J % 1.7% K % 1.% K % 1.6% K % 1.6% L % 1.% 15 3L 3 L % 1.3% L % 1.3% M % 1.% M % 11.% N % 1.% N % 1.4% P % 1.% P % 1.3% Q % 1.% Q % 1.7% R % 1.% 15 6 R % 1.% R % 1.% T % 1.% T % /9

13 LEOL General This table is based on the rated coefficient of discharge for steams and gases of LESER safety valves certified by ASME. The appropriated K-values are shown in the column K-value of the table. LEO L [inch 2 ] = A [inch 2 ]. ( K ),65 LEO L LESER Effective Orifice (for liquid) Orifice acc. API 526 Flange rating class Valve size d [inch] d [mm] K-value LEOL [inch 2 ] % of next higher orifice % of next lower orifice D.11 1.% 1.% D % 114.5% / 2 D % 114.5% / 2 D % 114.5% E % 1.% E % 18.4% / 2 E % 18.4% / 2 E % 18.4% F.37 1.% 1.% / 2 F % 114.4% / 2 F % 114.4% G.53 1.% 1.% / 2 G % 19.1% G % 19.1% H % 1.% 15 3L 1 1/ 2 H % 11.6% H % 11.6% J % 1.% 15 3L 2 J % 19.2% J % 19.2% K % 1.% K % 19.1% K % 19.1% L % 1.% 15 3L 3 L % 18.8% L % 18.8% M % 1.% M % 19.5% N % 1.% N % 18.8% P % 1.% P % 18.8% Q % 1.% Q % 19.2% R % 1.% 15 6 R % 18.5% R % 18.5% T % 1.% T % /1

14 General Sour gas service (H 2 S) Normative basis NACE MR In accordance with NACE standard MR sour gas service means the presence of H 2 S in the following conditions: Section All gas, gas condensate, and sour crude oil When the partial pressure of H 2 S in a wet (water as a liquid) gas phase of a gas, gas condensate, or crude oil system is equal to or exceeds.3 bar g (.5 psia) Exceptions are: Section Low-pressure gas When the total pressure is lower than 4.5 bar a (65psia) Section Low-pressure oil and gas multiphase systems: Other Sour gas standards: NACE MR13-23: Materials resistance to sulfide stress cracking in corrosive petroleum refining environments. DIN EN ISO : Petroleum and natural gas industries Materials for use in H 2 S containing environments in oil and gas production Part 1: General principles for selection of cracking-resistant materials (ISO :21) Works standard: Please refer to LDeS General requirements for sour gas service The above mentioned standards require a maximum hardness of 22 HRC for the most steels. For the actual requirements of a specific material please refer to the applied standard. LESER sour gas level General: Sour gas material requirements must be fulfilled if pressure and partial pressure conditions according to the applied standard exist. Based on these general statement LESER defines two sour gas level for safety valves: Level 1 Level 2 Part definition Contact with the medium in closed position Contact with the medium in opened position Conventional Balanced bellows Conventional Balanced bellows Contact area Pressure requirements Set pressure 4.5 bar a (65psia) Back pressure 4.5 bar a (65psia) Safety valve operation closed closed / opened Parts concerned Necessary material modification Body Type material WCB LCB WC CF8M Documentation Option code Conventional design Balanced bellows design Nozzle Disc Nozzle Disc All Nozzle, Disc Bonnet spacer Bellows Design Part Material Option code Material Option code Conventional Balanced bellows Disc 1.444/316L stel. L /316L stel. L44 Spring No modification required /Inconel X-75 X8 Disc Bellows / 316L stellited /1.444, Inconel 625/316L L44 J83 Conventional Spring No modification required Balanced bellows Bellows /1.444, Inconel 625/316L J / 316L stellited /1.444, Inconel 625/316L / Inconel X /1.444, Inconel 625/316L N78 L44 J83 X8 J83 Specification acc. to NACE. Inspection certificate 3.1 according to DIN EN 124 included. Components: Body, seat / nozzle and disc /11

15 Type Type 526 Type 526 Packed lever H4 Closed bonnet 526 Flanged Safety Relief Valves spring loaded Contents Chapter/Page Materials 1/2 1/4 How to order Example for numbering system 1/6 Article numbers 1/8 Dimensions Metric Units 1/1 US Units 1/12 Weights Metric Units 1/14 US Units 1/15 Orifice [ D T] Selection charts / Article numbers, dimensions and weights 1/16 Pressure temperature ratings [Metric Units + US Units] 1/18 Flange drillings 1/72 Outlet with flange rating class 3 1/74 Flange facings 1/76 Spare parts 1/77 Available options 1/86 Approvals 1/87 Capacities Steam [Metric Units + US Units] 1/88 Air [Metric Units + US Units] 1/9 Water [Metric Units + US Units] 1/92 Determination of coefficient of discharge K dr /a w 1/94 1/1

16 Type Cap H2 Lock nut Adjusting screw Needle bearing Spring plate 54 Spring 12 Spindle 9 Bonnet Split ring Spring plate 55 Stud 56 Nut Plug 64 8 Guide 6 Gasket 22 Lift restriction 57 Ball 66 Screw 61 Ball 73 Lock screw 7 Disc 6 Adjusting ring 1 Body 5 Nozzle 1/2

17 Item Materials Component Standard Service Type 5262 Trim: Standard Corrosive Service Type 5264 Trim: Standard Type 5267 Trim: Standard Type 5263 Trim: Standard Type Body SA 216 WCB SA 351 CF8M SA 217 WC6 SA 352 LCB 5 Nozzle 1) stellited CF8M CF8M CF8M stellited CF8M 6 Adjusting ring 7 Disc 8 9 Guide with bushing Bonnet Valve size 6 R 1, 8 T 1 12 Spindle 14 Split ring 16 / 17 Spring plate 18 Adjusting screw with bushing 19 Lock nut 22 Lift restriction 4 Cap H2 54 Spring 55 Stud 56 Nut 57 Ball 6 Gasket 61 Ball 64 Plug 66 Screw 69 Needle bearing 73 Lock screw CF8M CF8M CF8M CF8M stellited Hardened stainless steel 316L stellited Hardened stainless steel Hardened stainless steel Steel 316L 316L Steel tenifer tenifer Chrome steel tenifer Chrome steel tenifer , 1.448, SA 216 WCB SA L, SA 351 CF8M, 316Ti SA 217 WC6 SA 352 LCB Steel SA Ti Steel Steel L Chrome steel 316L Chrome steel Chrome steel Steel 316L Steel Steel tenifer Chrome steel 316L tenifer Chrome steel Chrome steel PTFE with 15% Glas PTFE 15% Glas PTFE 15% Glas PTFE 15% Glas PTFE with 15% Glas PTFE with 15% Glas PTFE with 15% Glas PTFE with 15% Glas Steel 316L Steel Steel L 316L 316L 316L Steel 316L Steel Steel 1.712, , , High temp. alloy steel Stainless steel High temp. alloy steel High temp. alloy steel B8M B8M B8M B8M M 8M 8M 8M Graphite / Graphite / Graphite / Graphite / Graphite / 316 Graphite / 316 Graphite / 316 Graphite / Hardened stainless steel 316 Hardened stainless steel Hardened stainless steel Steel Steel Steel Steel B8M Steel Steel B8M B8M B8M B8M L 316 L 316L 316L M 8M 8M 8M 1) Stellited sealing surfaces please refer to page 99/6. LESER reserves also to use the nozzle material 1.444/316L. Please notice: Special materials: - Modifications reserved by LESER - If several materials are specified LESER defines the material. Body and trim available in various materials (Monel, Hastelloy...). - LESER can upgrade materials without notice For nozzle and disc machined from the bar a short lead time is possible. - Every part can be replaced by other material acc. to customer specification. 1/3

18 Type Cap H2 Lock nut Adjusting screw Needle bearing Spring plate 54 Spring 12 Spindle 9 Bonnet Split ring Spring plate 55 Stud 56 Nut 8 Guide 6 Gasket 11 Bonnet spacer 15 Bellows 57 Ball 66 Screw 61 Ball 7 Disc 73 Lock screw 6 Adjusting ring 1 Body 5 Nozzle 1/4

19 Item Materials Component Standard Service Type 5262 Trim: Standard Corrosive Service Type 5264 Trim: Standard Type 5267 Trim: Standard Type 5263 Trim: Standard Type Body SA 216 WCB SA 315 CF8M SA 217 WC6 SA 352 LCB 5 Nozzle 1) stellited CF8M CF8M CF8M stellited CF8M 6 Adjusting ring CF8M CF8M 316L CF8M 7 Disc stellited Hardened stainless steel 316L stellited Hardened stainless steel Hardened stainless steel 8 Guide L 316L 316L 316L Bonnet , 1.448, SA 216 WCB SA L, SA 351 CF8M, 316Ti SA 217 WC6 SA 352 LCB 9 Valve size 6 R 1, 8T Steel SA Ti Steel Steel 11 Bonnet spacer 2) Carbon steel SA L SA L 316L 12 Spindle L Split ring Chrome steel 316L Chrome steel Chrome steel 15 Bellows End pieces 16 / 17 Spring plate 18 Adjusting screw with bushing 19 Lock nut 4 Cap H2 54 Spring 55 Stud 56 Nut 57 Ball 6 Gasket 61 Ball 66 Screw 69 Needle bearing 73 Lock screw Inconel L Inconel L Inconel L Inconel L Steel 316L Steel Steel tenifer Chrome steel 316L tenifer Chrome steel Chrome steel PTFE 15% Glas PTFE 15% Glas PTFE 15% Glas PTFE 15% Glas PTFE 15% Glas PTFE 15% Glas PTFE 15% Glas PTFE 15% Glas Steel 316L Steel Steel Steel 316L Steel Steel 1.712, , , High temp. alloy steel Stainless steel High temp. alloy steel High temp. alloy steel B8M B8M B16 B8M M 8M 7M 8M Graphite / Graphite / Graphite / Graphite / Graphite / 316 Graphite / 316 Graphite / 316 Graphite / Hardened stainless steel 316 Hardened stainless steel Hardened stainless steel B8M B8M B8M B8M L 316 L 316L 316L M 8M 8M 8M 1) Stellited sealing surfaces please refer to page 99/6. LESER reserves also to use the nozzle material 1.444/ 316L. 2) Valve size 6 R 1 and 8 T 1 without bonnet spacer Please notice: Special materials: - Modifications reserved by LESER Body and trim available in various materials (Monel, Hastelloy...). - If several materials are specified LESER defines the material. For nozzle and disc machined from the bar a short lead time is possible. - LESER can upgrade materials without notice - Every part can be replaced by other material acc. to customer specification. 1/5

20 How to order Example for numbering system Type Article Number 2Set Pressure Connections bar g H Valve Type 526 Please state unit (in gauge)! Please do not exceed the pressure range defined in the spring charts. If different from API 526 Standard please refer to page 1/73. 2 Material code Body + Code Bonnet material 2 WCB LCB 4 CF8M WC Valve code 4 Identifies valve size, body material, orifice and flange class. Refer to page 1/8 and 1/9. Code Lifting device 2 Screwed cap H2 3 Plain lever H3 4 Packed lever H4 5 Plain lever with open bonnet H3 1/6

21 4 5 6 Options Documentation Code and Medium Type 526 J22 H1 L3 3.1 Type 526 Option code Please select required documentation: 1 2 RTJ-groove inlet L58 O-ring disc CR K J21 EPDM D J22 FKM L J23 FFKM C J2 Disc / 316L Disc / 316L stellited Nozzle / CF8M stellited Nozzle / 316L stellited Nozzle / 316L L44 J25 L62 L65 L64 Balanced bellows J83 - high temperature equipment J88 (Type 5267 only) Stainless steel spring INCONEL spring X4 X8 Adaptor for lift indicator H4 J39 Lift indicator J93 Test gag - cap H2 J7 - packed lever H4 J69 Inspections, tests: Option code DIN EN : TÜV-Nord Certificate for test pressure M33 LESER CGA (Certificate for Global Application) - Inspection certificate 3.1 acc. to DIN EN Declaration of conformity acc. to PED 97/23/EC Material test certificate: DIN EN Part Body Bonnet Cap / lever cover Nozzle Disc Studs Nuts H3 Option code H1 L3 L31 L59 L23 N7 N Code 1. ASME Section VIII 2. CE / VdTUEV 3. ASME Section VIII + CE / VdTUEV Medium.1 Gases.2 Liquids.3 Steam. Steam / Gases / Liquids (valid only for CE / VdTUEV) Free of oil and grease J85 Materials - NACE N78 Heating jacket - Couplings G 3 / 8 H29 G 3 / 4 H3 - Flanges DN 15 H31 DN 25 H32 1 / 2 " class 15 K31 1" class 15 K32 Bolted cap H1 K1 Bolted lifting device H6 K6 Option code applies only if not standard 1/7

22 Article numbers Overview Type 526 Article numbers Material WCB CF8M WC6 LCB WCB CF8M WC6 LCB WCB CF8M WC6 LCB Flange class 15 x 15 3L x 15 3 x 15 Valve size 1 D 2 1 D 2 1 D 2 D E F Use 1 D x E 2 1 E 2 1 E Use 1 E x / 2 F / 2 F / 2 F G 1 1 / 2 G / 2 G / 2 G Flange class 15 x 15 3L x 15 3 x 15 Valve size 1 1 / 2 H / 2 H 3 2 H 3 H J 2 J 3 2 J 3 3 J K 3 K 4 3 K 4 3 K Use 3 K x Flange class 15 x 15 3L x 15 3 x 15 Valve size 3 L 4 3 L 4 4 L 6 L M N P Q R T 4 M 6 4 M 6 4 M Use 4 M x N 6 4 N 6 4 N Use 4 N x P 6 4 P 6 4 P Q 8 6 Q 8 6 Q Use 6 Q x R 8 6 R 8 6 R T 1 8 T 1 8 T Use 8 T x /8

23 Article numbers Overview Article numbers Material WCB CF8M WC6 LCB WCB CF8M WC6 LCB WCB CF8M WC6 LCB WCB CF8M WC6 LCB Flange class 6 x 15 9 x 3 15 x 3 25 x 3 Valve size 1 D / 2 D / 2 D / 2 D 3 D E F G Use 1 1 / 2 D x E / 2 E / 2 E / 2 E Use 1 1 / 2 E x / 2 F / 2 F / 2 F / 2 F Use 1 1 / 2 F x / 2 G / 2 G 3 2 G 3 2 G Flange class 6 x 15 9 x x 3 Valve size 2 H 3 2 H 3 2 H 3 H Type 526 J 3 J 4 3 J 4 3 J K 3 K 4 3 K 6 3 K Flange class 6 x 15 9 x x 15 Valve size 4 L 6 4 L 6 4 L 6 L M N P Q 4 M 6 4 M N 6 4 N P 6 4 P Q R T 6 R T 1 ) Please add code for the required cap or lifting device. Code for lifting device H2 H3 H4 H3 Bonnet closed closed closed open WCB 1.619, WC , LCB CF8M /9

24 Dimensions Type 526 Metric Units Safety valve dimensions [mm] a b s Hmax. Hmax. with bellows a b s Hmax. Hmax. with bellows a b s Hmax. Support brackets [mm] A B C D E A B C D E A B C D E Flange rating class 15 x 15 3L x 15 3 x 15 Valve size 1 D 2 1 D 2 1 D 2 D E F G d [mm] Please see 1 D A [mm 2 ] Ø x Ø E 2 1 E 2 1 E 2 d [mm] Please see 1 E A [mm 2 ] Ø x Ø / 2 F / 2 F / 2 F 2 d [mm] A [mm 2 ] Ø Ø Ø / 2 G / 2 G / 2 G 3 d [mm] A [mm 2 ] Ø Ø Ø Flange rating class 15 x 15 3L x 15 3 x 15 Valve size 1 1 / 2 H / 2 H 3 2 H 3 H J K d [mm] A [mm 2 ] Ø Ø Ø J 3 2 J 3 3 J 4 d [mm] A [mm 2 ] Ø Ø Ø K 4 3 K 4 3 K 4 WCB, LCB, d [mm] Please see 3 K CF8M (WC6) A [mm 2 ] Ø x Ø Hmax. with bellows WC6 Flange rating class 15 x 15 3L x 15 3 x 15 Valve size 3 L 4 3 L 4 4 L 6 L M N P Q R T d [mm] A [mm 2 ] Ø Ø Ø M 6 4 M 6 4 M 6 d [mm] Please see 4 M A [mm 2 ] Ø x Ø N 6 4 N 6 4 N 6 d [mm] Please see 4 N A [mm 2 ] Ø x Ø P 6 4 P 6 4 P 6 d [mm] A [mm 2 ] Ø Ø Ø Q 8 6 Q 8 6 Q 8 d [mm] Please see 6 Q A [mm 2 ] Ø x Ø R 8 6 R 8 6 R 1 d [mm] A [mm 2 ] Ø Ø Ø T 1 8 T 1 8 T 1 d [mm] Please see 8 T A [mm 2 ] Ø x Ø /1

25 d = Actual orifice diameter A = Actual orifice area a b s Hmax. Hmax. with bellows a b s Hmax. Hmax. with bellows a b s Hmax. Hmax. with bellows a b s Hmax. A B C D E A B C D E A B C D E A B C D E 6 x 15 9 x 3 15 x 3 25 x 3 1 D / 2 D / 2 D / 2 D Please see 1 1 / 2 D Ø x Ø Ø E / 2 E / 2 E / 2 E Please see 1 1 / 2 E Ø x Ø Ø / 2 F / 2 F / 2 F / 2 F Please see 1 1 / 2 F Ø x Ø Ø / 2 G / 2 G 3 2 G 3 2 G Ø Ø Ø Ø x 15 9 x x 3 2 H 3 2 H 3 2 H Ø Ø Ø J 4 3 J 4 3 J Ø Ø Ø K 4 3 K 6 3 K Ø Ø Ø Ø x 15 9 x x 15 4 L 6 4 L 6 4 L Ø Ø Ø M 6 4 M Ø Ø N 6 4 N Ø Ø P 6 4 P Ø Ø Q Ø R Ø Support brackets Hmax. with bellows Type 526 1/11

26 Dimensions Type 526 US Units Safety valve dimensions [inch] a b s Hmax. Hmax. with bellows a b s Hmax. Hmax. with bellows a b s Hmax. Support brackets [inch] A B C D E A B C D E A B C D E Flange rating class 15 x 15 3L x 15 3 x 15 Valve size 1 D 2 1 D 2 1 D 2 D E F G Hmax. with bellows d [inch] / / / / / 16 Please see 1 D / / / / / 16 A [inch 2 ] / 8 Ø 9 / / 32 5 / 8 3 x / 8 Ø 9 / / 32 5 / 8 1 E 2 1 E 2 1 E 2 d [inch] / / / / / 16 Please see 1 E / / / / / 16 A [inch 2 ] / 8 Ø 9 / / 32 5 / 8 3 x / 8 Ø 9 / / 32 5 / / 2 F / 2 F / 2 F 2 d [inch] / / / / / / / / / / / / / / 32 A [inch 2 ] / 8 Ø 9 / / 5 32 / / 8 Ø 9 / / 5 32 / / 8 Ø / 5 32 / / 2 G / 2 G / 2 G 3 d [inch] / / / / / / / / / / / / / / 32 A [inch 2 ] / 8 Ø 9 / / 32 5 / / 8 Ø 9 / / 32 5 / / 8 Ø 9 / / 32 5 / 8 Flange rating class 15 x 15 3L x 15 3 x 15 Valve size 1 1 / 2 H / 2 H 3 2 H 3 H J K d [inch] / / / / / / / / / / / / / / / 4 A [inch 2 ] / 8 Ø 9 / / 32 5 / / 8 Ø 9 / / 32 5 / / / 32 Ø 9 / / 32 5 / 8 2 J 3 2 J 3 3 J 4 d [inch] / / / / / / / / / / / / / / / 16 A [inch 2 ] / / 32 Ø 9 / / 4 5 / / / 32 Ø 9 / / 4 5 / / / 2 Ø 23 / / / 32 3 K 4 3 K 4 3 K 4 WCB, LCB, d [inch] / / / / / 32 Please see 3 K / / / / / 32 CF8M (WC6) A [inch 2 ] / / 2 Ø 23 / / / 32 3 x / / 2 Ø 23 / / / 32 WC6 Flange rating class 15 x 15 3L x 15 3 x 15 Valve size 3 L 4 3 L 4 4 L 6 L M N P Q R T d [inch] / / / / / / / / / / / / / / / 8 A [inch 2 ] / / 2 Ø 23 / / / / / 2 Ø 23 / / / / / 16 Ø 23 / / / 32 4 M 6 4 M 6 4 M 6 d [inch] / / / / 32 Please see 4 M / / / / 32 A [inch 2 ] / / 16 Ø 23 / / 4 31 / 32 3 x / / 16 Ø 23 / / 4 31 / 32 4 N 6 4 N 6 4 N 6 d [inch] / / / / / 32 Please see 4 N / / / / / 32 A [inch 2 ] / / 16 Ø 23 / / 32 3 x / / 16 Ø 23 / / 32 4 P 6 4 P 6 4 P 6 d [inch] / / / / / / / / / / / / 16 A [inch 2 ] / / 16 Ø 23 / / / / / 16 Ø 23 / / / / / 32 Ø 23 / / / 32 6 Q 8 6 Q 8 6 Q 8 d [inch] / / / / / 4 Please see 6 Q / / / / / 4 A [inch 2 ] / / 32 Ø 23 / / 8 31 / 32 3 x / / 32 Ø 23 / / 8 31 / 32 6 R 8 6 R 8 6 R 1 d [inch] / / / / / / / / / / / / / / / 8 A [inch 2 ] / / 32 Ø 23 / / 8 31 / / / 32 Ø 23 / / 8 31 / / / 32 Ø 23 / / 8 31 / 32 8 T 1 8 T 1 8 T 1 d [inch] / / / / 16 Please see 8 T / / / / 16 A [inch 2 ] / / 32 Ø 23 / / / 32 3 x / / 32 Ø 23 / / / 32 1/12

27 d = Actual orifice diameter A = Actual orifice area a b s Hmax. Hmax. with bellows a b s Hmax. Hmax. with bellows a b s Hmax. Hmax. with bellows a b s Hmax. A B C D E A B C D E A B C D E A B C D E 6 x 15 9 x 3 15 x 3 25 x 3 1 D / 2 D / 2 D / 2 D 3 Hmax. with bellows 4 1 / / / / / 16 Please see 1 1 / 2 D / / / / / / / / / / 8 Ø 9 / / 32 5 / 8 15 x / 8 Ø 9 / / 32 5 / / 8 Ø 9 / / 32 5 / 8 1 E / 2 E / 2 E / 2 E / / / / / 16 Please see 1 1 / 2 E / / / / / / / / / / 8 Ø 9 / / 32 5 / 8 15 x / 8 Ø 9 / / 32 5 / / 8 Ø 9 / / 32 5 / / 2 F / 2 F / 2 F / 2 F / / / / 32 Please see 1 1 / 2 F / / / / / / / / / / 8 Ø 9 / / 32 5 / 8 15 x / 8 Ø 9 / / 32 5 / / 8 Ø 9 / / 32 5 / / 2 G / 2 G 3 2 G 3 2 G 3 Type 526a 4 7 / / / / / / / / / / / / / / / / / / / / 8 Ø 9 / / 32 5 / / 8 Ø / 32 5 / / / 32 Ø 9 / / 16 5 / / / 32 Ø 9 / / 16 5 / 8 6 x 15 9 x x 3 2 H 3 2 H 3 2 H / / / / / / / / / / / / / / / / / 32 Ø 9 / / 16 5 / / / 32 Ø 9 / / 16 5 / / / 32 Ø 9 / / 16 5 / 8 3 J 4 3 J 4 3 J / / / / / / / / / / / / / / / / / 2 Ø 23 / / / / / 2 Ø 23 / / / / / 2 Ø 23 / / / 32 3 K 4 3 K 6 3 K / / / / / / / / / / / / / / / / / 2 Ø 23 / / / / / 16 Ø 23 / / / / / 16 Ø 23 / / / / / / / / / / 2 Ø 23 / / / 32 6 x 15 9 x x 15 4 L 6 4 L 6 4 L / / / / / / / / / / / 4 2 / / / / / 16 Ø 23 / / / / / 16 Ø 23 / / / / 16 Ø 23 / / 32 4 M 6 4 M / / / / / / / / / / 16 Ø 23 / / 4 31 / / / 16 Ø 23 / / 32 4 N 6 4 N / / / / / / / / / / / / 16 Ø 23 / / / / 16 Ø 23 / / 32 4 P 6 4 P / / / / / / / / / / 32 Ø 23 / / / / / 32 Ø 23 / / / 32 6 Q / / / / / / / 32 Ø 23 / / 8 31 / 32 6 R / / / / / / / 32 Ø 23 / / 8 31 / 32 Support brackets 1/13

28 Weights Type 526 Metric Units Bonnet Lifting device Flange class 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 Valve size 1 D 2 1 D 2 1 D 2 1 D / 2 D / 2 D / 2 D 3 D E F G Weight [kg] with bellows [kg] all all 1 E 2 1 E 2 1 E 2 1 E / 2 E / 2 E / 2 E 3 Weight [kg] with bellows [kg] / 2 F / 2 F / 2 F / 2 F / 2 F / 2 F / 2 F 3 Weight [kg] with bellows [kg] / 2 G / 2 G / 2 G / 2 G / 2 G 3 2 G 3 2 G 3 Weight [kg] with bellows [kg] Flange class 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 3 Valve size 1 1 / 2 H / 2 H 3 2 H 3 2 H 3 2 H 3 2 H 3 H J K Weight [kg] with bellows [kg] J 3 2 J 3 3 J 4 3 J 4 3 J 4 3 J 4 Weight [kg] with bellows [kg] K 4 3 K 4 3 K 4 3 K 4 3 K 6 3 K 6 Other WC6 Weight [kg] with bellows [kg] Flange class 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 15 Valve size 3 L 4 3 L 4 4 L 6 4 L 6 4 L 6 4 L 6 L M N P Q R T Weight [kg] with bellows [kg] M 6 4 M 6 4 M 6 4 M 6 4 M 6 Weight [kg] with bellows [kg] N 6 4 N 6 4 N 6 4 N 6 4 N 6 Weight [kg] with bellows [kg] P 6 4 P 6 4 P 6 4 P 6 4 P 6 Weight [kg] with bellows [kg] Q 8 6 Q 8 6 Q 8 6 Q 8 Weight [kg] with bellows [kg] R 8 6 R 8 6 R 1 6 R 1 Weight [kg] with bellows [kg] T 1 8 T 1 8 T 1 Weight [kg] with bellows [kg] /14

29 Weights US Units Bonnet Lifting device Flange class 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 Valve size 1 D 2 1 D 2 1 D 2 1 D / 2 D / 2 D / 2 D 3 D E F G Weight [lbs] with bellows [lbs] all all 1 E 2 1 E 2 1 E 2 1 E / 2 E / 2 E / 2 E 3 Weight [lbs] with bellows [lbs] / 2 F / 2 F / 2 F / 2 F / 2 F / 2 F / 2 F 3 Weight [lbs] with bellows [lbs] / 2 G / 2 G / 2 G / 2 G / 2 G 3 2 G 3 2 G 3 Weight [lbs] with bellows [lbs] Flange class 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 3 Valve size 1 1 / 2 H / 2 H 3 2 H 3 2 H 3 2 H 3 2 H 3 H J K Weight [lbs] with bellows [lbs] J 3 2 J 3 3 J 4 3 J 4 3 J 4 3 J 4 Weight [lbs] with bellows [lbs] K 4 3 K 4 3 K 4 3 K 4 3 K 6 3 K 6 Other WC6 Weight [lbs] with bellows [lbs] Flange class 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 15 Valve size 3 L 4 3 L 4 4 L 6 4 L 6 4 L 6 4 L 6 L M N P Q R T Weight [lbs] with bellows [lbs] M 6 4 M 6 4 M 6 4 M 6 4 M 6 Weight [lbs] with bellows [lbs] N 6 4 N 6 4 N 6 4 N 6 4 N 6 Weight [lbs] with bellows [lbs] P 6 4 P 6 4 P 6 4 P 6 4 P 6 Weight [lbs] with bellows [lbs] Q 8 6 Q 8 6 Q 8 6 Q 8 Weight [lbs] with bellows [lbs] R 8 6 R 8 6 R 1 6 R 1 Weight [lbs] with bellows [lbs] T 1 8 T 1 8 T 1 Weight [lbs] with bellows [lbs] Type 526 1/15

30 Selection chart Orifice D WCB WC6 15 x X 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 See 3 x X X See 15 x X X See 3 x X X See 15 x X X D WCB WC6 T [ F] p [bar] T [ C] p [psig] CF8M 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x X See 3 x X X See 15 x X X p [bar] CF8M T [ F] T [ C] p [psig] 1/16

31 Orifice D Article numbers, dimensions and weights Article numbers Valve size 1 D 2 1 D 2 1 D 2 1 D / 2 D / 2 D / 2 D 3 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 Actual Orifice diameter d [mm] Actual Orifice area A [mm 2 ] Body material WCB Art.-No CF8M Art.-No Use 1 D Use 1 1 / 2 D WC Art.-No. 3 x x LCB Art.-No ) Please add code for the required cap or lifting device. See below. D Dimensions and weights Metric Units Weight [kg] with bellows Center to face Inlet a [mm] Outlet b s 3 Use 1 D Use 1 1 / 2 D Height (H4) Standard H max x x [mm] Bellows H max Support brackets A [mm] B US Units C Ø 14 Ø 14 Ø 14 Ø 14 Ø 14 D E Weight [lbs] with bellows Center to face Inlet a 4 1 / / / / / 2 [inch] Outlet b 4 1 / / / / 2 7 s 1 3 / 16 Use 1 D / / 16 Use 1 1 / 2 D / / 4 Height (H4) Standard H max / 16 3 x / / x / / 16 [inch] Bellows H max / / / / / 16 Support brackets A 5 1 / / / / / 8 [inch] B Code for lifting device Lifting device H2 H3 H4 H3 Bonnet closed closed closed open WCB 1.619, WC , LCB CF8M C Ø 9 / 16 Ø 9 / 16 Ø 9 / 16 Ø 9 / 16 Ø 9 / 16 D 5 7 / / / / / 32 E 5 / 8 5 / 8 5 / 8 5 / 8 5 / 8 Support brackets 1/17

32 Pressure temperature ratings Orifice D Metric Units D Valve size 1 D 2 1 D 2 1 D 2 1 D / 2 D / 2 D / 2 D 3 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 Actual Orifice diameter d [mm] Actual Orifice area A [mm 2 ] Minimum [bar] S/G/L Minimum [bar] S/G Balanced bellows Inconel [bar] L Body material: WCB Pressure range p [bar] S/G/L Maximum -29 to 38 C to 232 C to 427 C 5.5 Use 1 D Use 1 1 / D 2 3 x x Body material: CF8M Pressure range p [bar] S/G/L Maximum -268 to -6 C to -29 C to 38 C to 232 C 12.4 Use 1 D Use 1 1 / 2 D to 427 C x x to 538 C Body material: WC Pressure range p [bar] S/G/L Maximum 233 to 427 C to 538 C Use 1 1 / 2 D x Body material: LCB Pressure range p [bar] S/G/L Maximum -46 to 38 C to 2 C to 343 C 8.4 Use 1 D Use 1 1 / 2 D x x Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table The stated Pressure-Temperature Rating are taken from ASME B16.34 Table if the maximum pressure is not limited by API 526. Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and with the respective pressure-temperature range as well. 1/18

33 Pressure temperature ratings Orifice D US Units Valve size 1 D 2 1 D 2 1 D 2 1 D / 2 D / 2 D / 2 D 3 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 Actual Orifice diameter d [inch] Actual Orifice area A [inch 2 ] Minimum [psig] S/G/L Minimum [psig] S/G Balanced bellows Inconel [psig] L Body material: WCB Pressure range p [psig] S/G/L Maximum -2 to 1 F to 45 F to 8 F 8 Use 1 D Use 1 1 / D 2 3 x x D Body material: CF8M Pressure range p [psig] S/G/L Maximum -45 to -76 F to -21 F to 1 F to 45 F 18 Use 1 D Use 1 1 / 2 D to 8 F 8 3 x x to 1 F Body material: WC Pressure range p [psig] S/G/L Maximum 451 to 8 F to 1 F Use 1 1 / 2 D x Body material: LCB Pressure range p [psig] S/G/L Maximum -5 to 1 F to 4 F to 65 F 125 Use 1 D Use 1 1 / 2 D x x Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table The stated Pressure-Temperature Rating are taken from ASME B16.34 Table if the maximum pressure is not limited by API 526. Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and with the respective pressure-temperature range as well. 1/19

34 Selection chart Orifice E 15 x 15 WCB X WC6 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 See 3 x X X See 15 x X X See 3 x X X See 15 x X X E WCB WC6 T [ F] p [bar] T [ C] p [psig] CF8M 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x X See 3 x X X See 15 x X X p [bar] CF8M T [ F] T [ C] p [psig] 1/2

35 Orifice E Article numbers, dimensions and weights Article numbers Valve size 1 E 2 1 E 2 1 E 2 1 E / 2 E / 2 E / 2 E 3 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 Actual Orifice diameter d [mm] Actual Orifice area A [mm 2 ] Body material WCB Art.-No CF8M Art.-No Use 1 E Use 1 1 / 2 E WC Art.-No. 3 x x LCB Art.-No ) Please add code for the required cap or lifting device. See below. E Dimensions and weights Metric Units Weight [kg] with bellows Center to face Inlet a [mm] Outlet b s 3 Use 1 E Use 1 1 / 2 E Height (H4) Standard H max x x [mm] Bellows H max Support brackets A [mm] B C Ø 14 Ø 14 Ø 14 Ø 14 Ø 14 D E US Units Weight [lbs] with bellows Center to face Inlet a 4 1 / / / / / 2 [inch] Outlet b 4 1 / / / / 2 7 s 1 3 / 16 Use 1 E / / 16 Use 1 1 / 2 E / / 4 Height (H4) Standard H max / 16 3 x / / x / / 16 [inch] Bellows H max / / / / / 16 Support brackets A 5 1 / / / / / 8 [inch] B C Ø 9 / 16 Ø 9 / 16 Ø 9 / 16 Ø 9 / 16 Ø 9 / 16 D 5 7 / / / / / 32 E 5 / 8 5 / 8 5 / 8 5 / 8 5 / 8 Code for lifting device Lifting device H2 H3 H4 H3 Bonnet closed closed closed open WCB 1.619, WC , LCB CF8M Support brackets 1/21

36 Pressure temperature ratings Orifice E E Metric Units Valve size 1 E 2 1 E 2 1 E 2 1 E / 2 E / 2 E / 2 E 3 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 Actual Orifice diameter d [mm] Actual Orifice area A [mm 2 ] Minimum [bar] S/G/L Minimum [bar] S/G Balanced bellows Inconel [bar] L Body material: WCB Pressure range p [bar] S/G/L Maximum -29 to 38 C to 232 C to 427 C 5.5 Use 1 E Use 1 1 / E 2 3 x x Body material: CF8M Pressure range p [bar] S/G/L Maximum -268 to -6 C to -29 C to 38 C to 232 C 12.4 Use 1 E Use 1 1 / 2 E to 427 C x x to 538 C Body material: WC Pressure range p [bar] S/G/L Maximum 233 to 427 C to 538 C Use 1 1 / 2 E x Body material: LCB Pressure range p [bar] S/G/L Maximum -46 to 38 C to 2 C to 343 C 8.4 Use 1 E Use 1 1 / 2 E x x Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table The stated Pressure-Temperature Rating are taken from ASME B16.34 Table if the maximum pressure is not limited by API 526. Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and with the respective pressure-temperature range as well. 1/22

37 Pressure temperature ratings Orifice E US Units Valve size 1 E 2 1 E 2 1 E 2 1 E / 2 E / 2 E / 2 E 3 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 Actual Orifice diameter d [inch] Actual Orifice area A [inch 2 ] Minimum [psig] S/G/L Minimum [psig] S/G Balanced bellows Inconel [psig] L Body material: WCB Pressure range p [psig] S/G/L Maximum -2 to 1 F to 45 F to 8 F 8 Use 1 E Use 1 1 / E 2 3 x x E Body material: CF8M Pressure range p [psig] S/G/L Maximum -45 to -76 F to -21 F to 1 F to 45 F 18 Use 1 E Use 1 1 / 2 E to 8 F 8 3 x x to 1 F Body material: WC Pressure range p [psig] S/G/L Maximum 451 to 8 F to 1 F Use 1 1 / 2 E x Body material: LCB Pressure range p [psig] S/G/L Maximum -5 to 1 F to 4 F to 65 F 125 Use 1 E Use 1 1 / 2 E x x Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table The stated Pressure-Temperature Rating are taken from ASME B16.34 Table if the maximum pressure is not limited by API 526. Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and with the respective pressure-temperature range as well. 1/23

38 Selection chart Orifice F 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 WCB X X X X See 15 x X X WC X X See 15 x X X F WCB WC6 T [ F] p [bar] T [ C] p [psig] CF8M 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x X X X X See 15 x X X p [bar] CF8M T [ F] T [ C] p [psig] 1/24

39 Orifice F Article numbers, dimensions and weights Article numbers Valve size 1 1 / 2 F / 2 F / 2 F / 2 F / 2 F / 2 F / 2 F 3 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 Actual Orifice diameter d [mm] Actual Orifice area A [mm 2 ] Body material WCB Art.-No CF8M Art.-No Use 1 1 / 2 F WC Art.-No x LCB Art.-No ) Please add code for the required cap or lifting device. See below. Dimensions and weights Metric Units Weight [kg] with bellows Center to face Inlet a [mm] Outlet b s Use 1 1 / 2 F Height (H4) Standard H max x [mm] Bellows H max Support brackets A [mm] B C Ø 14 Ø 14 Ø 14 Ø 14 Ø 14 D E F US Units Weight [lbs] with bellows Center to face Inlet a 4 7 / / / / / / 2 [inch] Outlet b 4 3 / / / 2 7 s 1 1 / / / / 32 Use 1 1 / 2 F / / 4 Height (H4) Standard H max / / / / x / / 16 [inch] Bellows H max / / / / / / 16 Support brackets A 6 3 / / / / / / 8 [inch] B C Ø 9 / 16 Ø 9 / 16 Ø 9 / 16 Ø 9 / 16 Ø 9 / 16 Ø 9 / 16 D 5 27 / / / / / / 32 E 5 / 8 5 / 8 5 / 8 5 / 8 5 / 8 5 / 8 Code for lifting device Lifting device H2 H3 H4 H3 Bonnet closed closed closed open WCB 1.619, WC , LCB CF8M Support brackets 1/25

40 Pressure temperature ratings Orifice F F Metric Units Valve size 1 1 / 2 F / 2 F / 2 F / 2 F / 2 F / 2 F / 2 F 3 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 Actual Orifice diameter d [mm] Actual Orifice area A [mm 2 ] Minimum [bar] S/G/L Minimum [bar] S/G Balanced bellows Inconel [bar] L Body material: WCB Pressure range p [bar] S/G/L Maximum -29 to 38 C to 232 C to 427 C Use 1 1 / F 3 15 x Body material: CF8M Pressure range p [bar] S/G/L Maximum -268 to -6 C to -29 C to 38 C to 232 C Use 1 1 / 2 F to 427 C x to 538 C Body material: WC Pressure range p [bar] S/G/L Maximum 233 to 427 C to 538 C Use 1 1 / 2 F x Body material: LCB Pressure range p [bar] S/G/L Maximum -46 to 38 C to 2 C to 343 C Use 1 1 / 2 F x Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table The stated Pressure-Temperature Rating are taken from ASME B16.34 Table if the maximum pressure is not limited by API 526. Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and with the respective pressure-temperature range as well. 1/26

41 Pressure temperature ratings Orifice F US Units Valve size 1 1 / 2 F / 2 F / 2 F / 2 F / 2 F / 2 F / 2 F 3 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 Actual Orifice diameter d [inch] Actual Orifice area A [inch 2 ] Minimum [psig] S/G/L Minimum [psig] S/G Balanced bellows Inconel [psig] L Body material: WCB Pressure range p [psig] S/G/L Maximum -2 to 1 F to 45 F to 8 F Use 1 1 / F 3 15 x F Body material: CF8M Pressure range p [psig] S/G/L Maximum -45 to -76 F to -21 F to 1 F to 45 F Use 1 1 / 2 F to 8 F x to 1 F Body material: WC Pressure range p [psig] S/G/L Maximum 451 to 8 F to 1 F Use 1 1 / 2 F x Body material: LCB Maximum -5 to 1 F to 4 F to 65 F Use 1 1 / 2 F x Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table The stated Pressure-Temperature Rating are taken from ASME B16.34 Table if the maximum pressure is not limited by API 526. Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and with the respective pressure-temperature range as well. 1/27

42 Selection chart Orifice G 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 WCB X X X X X X X WC X X X X X G WCB WC6 T [ F] p [bar] T [ C] p [psig] CF8M 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x X X X X X X X p [bar] CF8M T [ F] T [ C] p [psig] 4 1/28

43 Orifice G Article numbers, dimensions and weights Article numbers Valve size 1 1 / 2 G / 2 G / 2 G / 2 G / 2 G 3 2 G 3 2 G 3 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 Actual Orifice diameter d [mm] Actual Orifice area A [mm 2 ] Body material WCB Art.-No CF8M Art.-No WC Art.-No LCB Art.-No ) Please add code for the required cap or lifting device. See below. Dimensions and weights Metric Units Weight 3,6 3,6 32,5 32,5 36,3 69,9 69,9 [kg] with bellows 33,1 33, ,6 72,5 72,5 Center to face Inlet a [mm] Outlet b s Height (H4) Standard H max [mm] Bellows H max Support brackets A [mm] B C Ø 14 Ø 14 Ø 14 Ø 14 Ø 14 Ø 14 Ø 14 D E G US Units Weight 67,5 67,5 71,7 71, ,1 154,1 [lbs] with bellows ,2 77,2 85,1 159,9 159,9 Center to face Inlet a 4 7 / / / / / / / 8 [inch] Outlet b 4 3 / / / / / 4 s 1 1 / / / / / / / 16 Height (H4) Standard H max / / / / / / / 32 [inch] Bellows H max / / / / / / / 4 Support brackets A 6 3 / / / / / / / 4 [inch] B 4 11 / / 32 C Ø 9 / 16 Ø 9 / 16 Ø 9 / 16 Ø 9 / 16 Ø 9 / 16 Ø 9 / 16 Ø 9 / 16 D 5 27 / / / / / / / 16 E 5 / 8 5 / 8 5 / 8 5 / 8 5 / 8 5 / 8 5 / 8 Code for lifting device Lifting device H2 H3 H4 H3 Bonnet closed closed closed open WCB 1.619, WC , LCB CF8M Support brackets 1/29

44 Pressure temperature ratings Orifice G Metric Units G Valve size 1 1 / 2 G / 2 G / 2 G / 2 G / 2 G 3 2 G 3 2 G 3 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 Actual Orifice diameter d [mm] , Actual Orifice area A [mm 2 ] Minimum [bar] S/G/L Minimum [bar] S/G Balanced bellows Inconel [bar] L Body material: WCB Pressure range p [bar] S/G/L Maximum -29 to 38 C to 232 C to 427 C Body material: CF8M Pressure range p [bar] S/G/L Maximum -268 to -6 C to -29 C to 38 C to 232 C to 427 C to 538 C Body material: WC Pressure range p [bar] S/G/L Maximum 233 to 427 C to 538 C Body material: LCB Pressure range p [bar] S/G/L Maximum -46 to 38 C to 2 C to 343 C Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table The stated Pressure-Temperature Rating are taken from ASME B16.34 Table if the maximum pressure is not limited by API 526. Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and with the respective pressure-temperature range as well. 1/3

45 Pressure temperature ratings Orifice G US Units Valve size 1 1 / 2 G / 2 G / 2 G / 2 G / 2 G 3 2 G 3 2 G 3 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 Actual Orifice diameter d [inch] Actual Orifice area A [inch 2 ] Minimum [psig] S/G/L Minimum [psig] S/G Balanced bellows Inconel [psig] L Body material: WCB Pressure range p [psig] S/G/L Maximum -2 to 1 F to 45 F to 8 F Body material: CF8M Pressure range p [psig] S/G/L Maximum -45 to -76 F to -21 F to 1 F to 45 F to 8 F to 1 F G Body material: WC Pressure range p [psig] S/G/L Maximum 451 to 8 F to 1 F Body material: LCB Pressure range p [psig] S/G/L Maximum -5 to 1 F to 4 F to 65 F Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table The stated Pressure-Temperature Rating are taken from ASME B16.34 Table if the maximum pressure is not limited by API 526. Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and with the respective pressure-temperature range as well. 1/31

46 Selection chart Orifice H WCB WC6 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 3 25 x X X X X X X X X X X WCB WC6 T [ F] p [bar] H p [psig] CF8M 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 3 25 x X X X X X X p [bar] CF8M T [ F] T [ C] p [psig] 1/32

47 Orifice H Article numbers, dimensions and weights Article numbers Valve size 1 1 / 2 H / 2 H 3 2 H 3 2 H 3 2 H 3 2 H 3 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 3 Actual Orifice diameter d [mm] Actual Orifice area A [mm 2 ] Body material WCB Art.-No CF8M Art.-No WC Art.-No LCB Art.-No ) Please add code for the required cap or lifting device. See below. Dimensions and weights Metric Units Weight [kg] with bellows Center to face Inlet a [mm] Outlet b s Height (H4) Standard H max [mm] Bellows H max Support brackets A [mm] B C Ø 14 Ø 14 Ø 14 Ø 14 Ø 14 Ø 14 D E H US Units Weight [lbs] with bellows Center to face Inlet a 5 1 / / / / / / 16 [inch] Outlet b 4 7 / / / / / / 8 s 1 1 / / / / / / 16 Height (H4) Standard H max / / / / / / 32 [inch] Bellows H max / / / / / / 32 Support brackets A 6 3 / / / / / / 4 [inch] B 4 11 / / / / 32 C Ø 9 / 16 Ø 9 / 16 Ø 9 / 16 Ø 9 / 16 Ø 9 / 16 Ø 9 / 16 D 6 3 / / / / / / 16 E 5 / 8 5 / 8 5 / 8 5 / 8 5 / 8 5 / 8 Code for lifting device Lifting device H2 H3 H4 H3 Bonnet closed closed closed open WCB 1.619, WC , LCB CF8M Support brackets 1/33

48 Pressure temperature ratings Orifice H Metric Units Valve size 1 1 / 2 H / 2 H 3 2 H 3 2 H 3 2 H 3 2 H 3 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 3 Actual Orifice diameter d [mm] Actual Orifice area A [mm 2 ] Minimum [bar] S/G/L Minimum [bar] S/G Balanced bellows Inconel [bar] L Body material: WCB Pressure range p [bar] S/G/L Maximum -29 to 38 C to 232 C to 427 C H Body material: CF8M Pressure range p [bar] S/G/L Maximum -268 to -6 C to -29 C to 38 C to 232 C to 427 C to 538 C Body material: WC Pressure range p [bar] S/G/L Maximum 233 to 427 C to 538 C Body material: LCB Pressure range p [bar] S/G/L Maximum -46 to 38 C to 2 C to 343 C Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table The stated Pressure-Temperature Rating are taken from ASME B16.34 Table if the maximum pressure is not limited by API 526. Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and with the respective pressure-temperature range as well. 1/34

49 Pressure temperature ratings Orifice H US Units Valve size 1 1 / 2 H / 2 H 3 2 H 3 2 H 3 2 H 3 2 H 3 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 3 Actual Orifice diameter d [inch] Actual Orifice area A [inch 2 ] Minimum [psig] S/G/L Minimum [psig] S/G Balanced bellows Inconel [psig] L Body material: WCB Pressure range p [psig] S/G/L Maximum -2 to 1 F to 45 F to 8 F Body material: CF8M Pressure range p [psig] S/G/L Maximum -45 to -76 F to -21 F to 1 F to 45 F to 8 F to 1 F H Body material: WC Pressure range p [psig] S/G/L Maximum 451 to 8 F to 1 F Body material: LCB Pressure range p [psig] S/G/L Maximum -5 to 1 F to 4 F to 65 F Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table The stated Pressure-Temperature Rating are taken from ASME B16.34 Table if the maximum pressure is not limited by API 526. Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and with the respective pressure-temperature range as well. 1/35

50 Selection chart Orifice J 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 3 25 x 3 WCB X X X X X X WC X X X X WCB WC6 T [ F] p [bar] T [ C] 2 1 J p [psig] CF8M 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 3 25 x X X X X X X p [bar] CF8M T [ F] T [ C] p [psig] 1/36

51 Orifice J Article numbers, dimensions and weights Article numbers Valve size 2 J 3 2 J 3 3 J 4 3 J 4 3 J 4 3 J 4 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 3 Actual Orifice diameter d [mm] Actual Orifice area A [mm 2 ] Body material WCB Art.-No CF8M Art.-No WC Art.-No LCB Art.-No ) Please add code for the required cap or lifting device. See below. Dimensions and weights Metric Units Weight [kg] with bellows Center to face Inlet a [mm] Outlet b s Height (H4) Standard H max [mm] Bellows H max Support brackets A [mm] B C Ø 14 Ø 14 Ø 18 Ø 18 Ø 18 Ø 18 D E J US Units Weight [lbs] with bellows Center to face Inlet a 5 3 / / / / / / 4 [inch] Outlet b 4 7 / / / / / / 8 s 1 15 / / / / / / 16 Height (H4) Standard H max / / / / / / 16 [inch] Bellows H max / / / / / / 16 Support brackets A 7 1 / / / / / / 8 [inch] B 4 11 / / / / / / 2 C Ø 9 / 16 Ø 9 / 16 Ø 23 / 32 Ø 23 / 32 Ø 23 / 32 Ø 23 / 32 D 7 1 / / / / / / 32 E 5 / 8 5 / 8 31 / / / / 32 Code for lifting device Lifting device H2 H3 H4 H3 Bonnet closed closed closed open WCB 1.619, WC , LCB CF8M Support brackets 1/37

52 Pressure temperature ratings Orifice J Metric Units Valve size 2 J 3 2 J 3 3 J 4 3 J 4 3 J 4 3 J 4 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 3 Actual Orifice diameter d [mm] Actual Orifice area A [mm 2 ] Minimum [bar] S/G/L Minimum [bar] S/G Balanced bellows Inconel [bar] L Body material: WCB Pressure range p [bar] S/G/L Maximum -29 to 38 C to 232 C to 427 C J Body material: CF8M Pressure range p [bar] S/G/L Maximum -268 to -6 C to -29 C to 38 C to 232 C to 427 C to 538 C Body material: WC Pressure range p [bar] S/G/L Maximum 233 to 427 C to 538 C Body material: LCB Pressure range p [bar] S/G/L Maximum -46 to 38 C to 2 C to 343 C Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table The stated Pressure-Temperature Rating are taken from ASME B16.34 Table if the maximum pressure is not limited by API 526. Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and with the respective pressure-temperature range as well. 1/38

53 Pressure temperature ratings Orifice J US Units Valve size 2 J 3 2 J 3 3 J 4 3 J 4 3 J 4 3 J 4 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 3 Actual Orifice diameter d [inch] Actual Orifice area A [inch 2 ] Minimum [psig] S/G/L Minimum [psig] S/G Balanced bellows Inconel [psig] L Body material: WCB Pressure range p [psig] S/G/L Maximum -2 to 1 F to 45 F to 8 F Body material: CF8M Pressure range p [psig] S/G/L Maximum -45 to -76 F to -21 F to 1 F to 45 F to 8 F to 1 F J Body material: WC Pressure range p [psig] S/G/L Maximum 451 to 8 F to 1 F Body material: LCB Pressure range p [psig] S/G/L Maximum -5 to 1 F to 4 F to 65 F Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table The stated Pressure-Temperature Rating are taken from ASME B16.34 Table if the maximum pressure is not limited by API 526. Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and with the respective pressure-temperature range as well. 1/39

54 Selection chart Orifice K 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 3 25 x 3 WCB X See 3 x X X X X WC6 See 3 x X X X X WCB WC6 T [ F] p [bar] T [ C] K CF8M p [psig] 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 3 25 x X See 3 x X X X X p [bar] CF8M T [ F] T [ C] p [psig] 1/4

55 Orifice K Article numbers, dimensions and weights Article numbers Valve size 3 K 4 3 K 4 3 K 4 3 K 4 3 K 6 3 K 6 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 3 Actual Orifice diameter d [mm] Actual Orifice area A [mm 2 ] Body material WCB Art.-No CF8M Art.-No Use 3 K WC Art.-No. 3 x LCB Art.-No ) Please add code for the required cap or lifting device. See below. Dimensions and weights Metric Units Other WC6 Weight [kg] with bellows Center to face Inlet a [mm] Outlet b s 49 Use 3 K Height (H4) Standard H max x [mm] Bellows H max Support brackets A [mm] B C Ø 18 Ø 18 Ø 18 Ø 18 Ø 18 Ø 18 D E K US Units Weight [lbs] with bellows Center to face Inlet a 6 1 / / / / / / 4 [inch] Outlet b 6 3 / / / / / / 2 s 1 15 / / / / / / 16 Height (H4) Standard H max Use 3 K 4 / 32 3 x / / / / / 32 [inch] Bellows H max / / / / / / 32 Support brackets A 9 3 / / / / / / 16 [inch] B 5 1 / / / / / / 16 C Ø 23 / 32 Ø 23 / 32 Ø 23 / 32 Ø 23 / 32 Ø 23 / 32 Ø 23 / 32 D 8 3 / / / / / / 32 E 31 / / / / / / 32 Code for lifting device Lifting device H2 H3 H4 H3 Bonnet closed closed closed open WCB 1.619, WC , LCB CF8M Support brackets 1/41

56 Pressure temperature ratings Orifice K Metric Units Valve size 3 K 4 3 K 4 3 K 4 3 K 4 3 K 6 3 K 6 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 3 Actual Orifice diameter d [mm] Actual Orifice area A [mm 2 ] [bar] S/G/L Minimum WC6 only.3.3 Minimum [bar] S/G Balanced bellows Inconel [bar] L Body material: WCB Pressure range p [bar] S/G/L Maximum -29 to 38 C to 232 C to 427 C Use 3 K 4 3 x K Body material: CF8M Pressure range p [bar] S/G/L Maximum -268 to -6 C to -29 C to 38 C to 232 C to 427 C 5.5 Use 3 K to 538 C x Body material: WC Pressure range p [bar] S/G/L Maximum 233 to 427 C to 538 C Body material: LCB Pressure range p [bar] S/G/L Maximum -46 to 38 C to 2 C to 343 C Use 3 K 4 3 x Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table The stated Pressure-Temperature Rating are taken from ASME B16.34 Table if the maximum pressure is not limited by API 526. Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and with the respective pressure-temperature range as well. 1/42

57 Pressure temperature ratings Orifice K US Units Valve size 3 K 4 3 K 4 3 K 4 3 K 4 3 K 6 3 K 6 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 3 Actual Orifice diameter d [inch] Actual Orifice area A [inch 2 ] [psig] S/G/L Minimum WC6 only Minimum [psig] S/G Balanced bellows Inconel [psig] L Body material: WCB Pressure range p [psig] S/G/L Maximum -2 to 1 F to 45 F to 8 F Use 3 K 4 3 x Body material: CF8M Pressure range p [psig] S/G/L Maximum -45 to -76 F to -21 F to 1 F to 45 F to 8 F 8 Use 3 K to 1 F 2 3 x Body material: WC Pressure range p [psig] S/G/L Maximum 451 to 8 F to 1 F Body material: LCB Pressure range p [psig] S/G/L Maximum -5 to 1 F to 4 F to 65 F Use 3 K 4 3 x K Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table The stated Pressure-Temperature Rating are taken from ASME B16.34 Table if the maximum pressure is not limited by API 526. Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and with the respective pressure-temperature range as well. 1/43

58 Selection chart Orifice L 15 x 15 3L x 15 3 x 15 6 x 15 9 x x x 3 WCB X X X X X X WC X X X X WCB WC6 T [ F] p [bar] T [ C] p [psig] L 15 x 15 3L x 15 3 x 15 6 x 15 9 x x x 3 CF8M X X X X X p [bar] CF8M T [ F] T [ C] p [psig] 1/44

59 Orifice L Article numbers, dimensions and weights Article numbers Valve size 3 L 4 3 L 4 4 L 6 4 L 6 4 L 6 4 L 6 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 15 Actual Orifice diameter d [mm] Actual Orifice area A [mm 2 ] Body material WCB Art.-No CF8M Art.-No WC Art.-No LCB Art.-No ) Please add code for the required cap or lifting device. See below. Dimensions and weights Metric Units Weight [kg] with bellows Center to face Inlet a [mm] Outlet b s Height (H4) Standard H max [mm] Bellows H max Support brackets A [mm] B C Ø 18 Ø 18 Ø 18 Ø 18 Ø 18 Ø 18 D E US Units Weight [lbs] with bellows L Center to face Inlet a 6 1 / / / / / / 4 [inch] Outlet b 6 1 / / / / / 4 s 1 15 / / / / / / 4 Height (H4) Standard H max / / / / / / 32 [inch] Bellows H max / / / / / / 32 Support brackets A 9 3 / / / / / / 16 [inch] B 5 1 / / / / / / 16 C Ø 23 / 32 Ø 23 / 32 Ø 23 / 32 Ø 23 / 32 Ø 23 / 32 Ø 23 / 32 D 8 3 / / / / E 31 / / / / / / 32 Code for lifting device Lifting device H2 H3 H4 H3 Bonnet closed closed closed open WCB 1.619, WC , LCB CF8M Support brackets 1/45

60 Pressure temperature ratings Orifice L Metric Units Valve size 3 L 4 3 L 4 4 L 6 4 L 6 4 L 6 4 L 6 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 15 Actual Orifice diameter d [mm] Actual Orifice area A [mm 2 ] Minimum [bar] S/G/L Minimum [bar] S/G Balanced bellows Inconel [bar] L Body material: WCB Pressure range p [bar] S/G/L Maximum -29 to 38 C to 232 C to 427 C L Body material: CF8M Pressure range p [bar] S/G/L Maximum -268 to -6 C to -29 C to 38 C to 232 C to 427 C to 538 C Body material: WC Pressure range p [bar] S/G/L Maximum 233 to 427 C to 538 C Body material: LCB Pressure range p [bar] S/G/L Maximum -46 to 38 C to 2 C to 343 C Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table The stated Pressure-Temperature Rating are taken from ASME B16.34 Table if the maximum pressure is not limited by API 526. Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and with the respective pressure-temperature range as well. 1/46

61 Pressure temperature ratings Orifice L US Units Valve size 3 L 4 3 L 4 4 L 6 4 L 6 4 L 6 4 L 6 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 15 Actual Orifice diameter d [inch] Actual Orifice area A [inch 2 ] Minimum [psig] S/G/L Minimum [psig] S/G Balanced bellows Inconel [psig] L Body material: WCB Pressure range p [psig] S/G/L Maximum -2 to 1 F to 45 F to 8 F Body material: CF8M Pressure range p [psig] S/G/L Maximum -45 to -76 F to -21 F to 1 F to 45 F to 8 F to 1 F L Body material: WC Pressure range p [psig] S/G/L Maximum 451 to 8 F to 1 F Body material: LCB Pressure range p [psig] S/G/L Maximum -5 to 1 F to 4 F to 65 F Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table The stated Pressure-Temperature Rating are taken from ASME B16.34 Table if the maximum pressure is not limited by API 526. Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and with the respective pressure-temperature range as well. 1/47

62 Selection chart Orifice M 15 x 15 3L x 15 3 x 15 6 x 15 9 x x x 3 WCB X See 3 x X X X WC6 See 3 x X X X WCB WC6 T [ F] p [bar] T [ C] p [psig] CF8M 15 x 15 3L x 15 3 x 15 6 x 15 9 x x x X See 3 x X X M 1 9 p [bar] CF8M T [ F] T [ C] p [psig] 1/48

63 Orifice M Article numbers, dimensions and weights Article numbers Valve size 4 M 6 4 M 6 4 M 6 4 M 6 4 M 6 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 Actual Orifice diameter d [mm] Actual Orifice area A [mm 2 ] Body material WCB Art.-No CF8M Art.-No Use 4 M WC Art.-No. 3 x LCB Art.-No ) Please add code for the required cap or lifting device. See below. Dimensions and weights Metric Units Weight [kg] with bellows Center to face Inlet a [mm] Outlet b s 48 Use 4 M Height (H4) Standard H max x [mm] Bellows H max Support brackets A [mm] B C Ø 18 Ø 18 Ø 18 Ø 18 D E US Units Weight [lbs] with bellows Center to face Inlet a / 4 [inch] Outlet b 7 1 / / / 4 s 1 7 / 8 Use 4 M / / / 4 Height (H4) Standard H max / 32 3 x / / / 32 [inch] Bellows H max / / / / 32 M Support brackets A 1 15 / / / / 16 [inch] B 6 5 / / / / 16 C Ø 23 / 32 Ø 23 / 32 Ø 23 / 32 Ø 23 / 32 D 1 1 / / / 4 11 E 31 / / / / 32 Code for lifting device Lifting device H2 H3 H4 H3 Bonnet closed closed closed open WCB 1.619, WC , LCB CF8M Support brackets 1/49

64 Pressure temperature ratings Orifice M Metric Units Valve size 4 M 6 4 M 6 4 M 6 4 M 6 4 M 6 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 Actual Orifice diameter d [mm] Actual Orifice area A [mm 2 ] Minimum [bar] S/G/L Minimum [bar] S/G Balanced bellows Inconel [bar] L Body material: WCB Pressure range p [bar] S/G/L Maximum -29 to 38 C to 232 C to 427 C 5.5 Use 4 M x Body material: CF8M Pressure range p [bar] S/G/L Maximum -268 to -6 C to -29 C to 38 C to 232 C 12.4 Use 4 M to 427 C x to 538 C M Body material: WC Pressure range p [bar] S/G/L Maximum 233 to 427 C to 538 C Use 4 M 6 3 x Body material: LCB Pressure range p [bar] S/G/L Maximum -46 to 38 C to 2 C to 343 C 8.4 Use 4 M x Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table The stated Pressure-Temperature Rating are taken from ASME B16.34 Table if the maximum pressure is not limited by API 526. Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and with the respective pressure-temperature range as well. 1/5

65 Pressure temperature ratings Orifice M US Units Valve size 4 M 6 4 M 6 4 M 6 4 M 6 4 M 6 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 Actual Orifice diameter d [inch] Actual Orifice area A [inch 2 ] Minimum [psig] S/G/L Minimum [psig] S/G Balanced bellows Inconel [psig] L Body material: WCB Pressure range p [psig] S/G/L Maximum -2 to 1 F to 45 F to 8 F 8 Use 4 M x Body material: CF8M Pressure range p [psig] S/G/L Maximum -45 to -76 F to -21 F to 1 F to 45 F 18 Use 4 M to 8 F 8 3 x to 1 F Body material: WC Pressure range p [psig] S/G/L Maximum 451 to 8 F to 1 F Use 4 M 6 3 x M Body material: LCB Pressure range p [psig] S/G/L Maximum -5 to 1 F to 4 F to 65 F 125 Use 4 M x Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table The stated Pressure-Temperature Rating are taken from ASME B16.34 Table if the maximum pressure is not limited by API 526. Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and with the respective pressure-temperature range as well. 1/51

66 Selection chart Orifice N 15 x 15 3L x 15 3 x 15 6 x 15 9 x x x 3 WCB X See 3 x X X X WC6 See 3 x X X X WCB WC6 T [ F] p [bar] T [ C] p [psig] CF8M 15 x 15 3L x 15 3 x 15 6 x 15 9 x x x X See 3 x X X 1 9 p [bar] N CF8M T [ F] T [ C] p [psig] 1/52

67 Orifice N Article numbers, dimensions and weights Article numbers Valve size 4 N 6 4 N 6 4 N 6 4 N 6 4 N 6 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 Actual Orifice diameter d [mm] Body material Actual Orifice area A [mm 2 ] WCB Art.-No CF8M Art.-No Use 4 N WC Art.-No. 3 x LCB Art.-No ) Please add code for the required cap or lifting device. See below. Dimensions and weights Metric Units Weight [kg] with bellows Center to face Inlet a [mm] Outlet b s 48 Use 4 N Height (H4) Standard H max x [mm] Bellows H max Support brackets A [mm] B C Ø 18 Ø 18 Ø 18 Ø 18 D E US Units Weight [lbs] with bellows Center to face Inlet a 7 3 / / / / 4 [inch] Outlet b 8 1 / / / / 4 s 1 7 / 8 Use 4 N / / / 4 Height (H4) Standard H max / 32 3 x / / / 32 [inch] Bellows H max / / / / 32 Support brackets A 1 15 / / / / 16 [inch] B 6 5 / / / / 16 N Code for lifting device Lifting device H2 H3 H4 H3 Bonnet closed closed closed open WCB 1.619, WC , LCB CF8M C Ø 23 / 32 Ø 23 / 32 Ø 23 / 32 Ø 23 / 32 D E 31 / / / / 32 Support brackets 1/53

68 Pressure temperature ratings Orifice N Metric Units Valve size 4 N 6 4 N 6 4 N 6 4 N 6 4 N 6 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 Actual Orifice diameter d [mm] Actual Orifice area A [mm 2 ] Minimum [bar] S/G/L Minimum [bar] S/G Balanced bellows Inconel [bar] L Body material: WCB Pressure range p [bar] S/G/L Maximum -29 to 38 C to 232 C to 427 C 5.5 Use 4 N x Body material: CF8M Pressure range p [bar] S/G/L Maximum -268 to -6 C to -29 C to 38 C to 232 C 12.4 Use 4 N to 427 C x to 538 C N Body material: WC Pressure range p [bar] S/G/L Maximum 233 to 427 C to 538 C Use 4 N 6 3 x Body material: LCB Pressure range p [bar] S/G/L Maximum -46 to 38 C to 2 C to 343 C 8.4 Use 4 N x Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table The stated Pressure-Temperature Rating are taken from ASME B16.34 Table if the maximum pressure is not limited by API 526. Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and with the respective pressure-temperature range as well. 1/54

69 Pressure temperature ratings Orifice N US Units Valve size 4 N 6 4 N 6 4 N 6 4 N 6 4 N 6 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 Actual Orifice diameter d [inch] Actual Orifice area A [inch 2 ] Minimum [psig] S/G/L Minimum [psig] S/G Balanced bellows Inconel [psig] L Body material: WCB Pressure range p [psig] S/G/L Maximum -2 to 1 F to 45 F to 8 F 8 Use 4 N x Body material: CF8M Pressure range p [psig] S/G/L Maximum -45 to -76 F to -21 F to 1 F to 45 F 18 Use 4 N to 8 F 8 3 x to 1 F Body material: WC Pressure range p [psig] S/G/L Maximum 451 to 8 F to 1 F Use 4 N 6 3 x N Body material: LCB Pressure range p [psig] S/G/L Maximum -5 to 1 F to 4 F to 65 F 125 Use 4 N x Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table The stated Pressure-Temperature Rating are taken from ASME B16.34 Table if the maximum pressure is not limited by API 526. Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and with the respective pressure-temperature range as well. 1/55

70 Selection chart Orifice P 15 x 15 3L x 15 3 x 15 6 x 15 9 x x x 3 WCB X X X X X WC X X X WCB WC6 T [ F] p [bar] T [ C] p [psig] CF8M 15 x 15 3L x 15 3 x 15 6 x 15 9 x x x X X X X p [bar] P CF8M T [ F] T [ C] p [psig] /56

71 Orifice P Article numbers, dimensions and weights Article numbers Valve size 4 P 6 4 P 6 4 P 6 4 P 6 4 P 6 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 Actual Orifice diameter d [mm] Actual Orifice area A [mm 2 ] Body material WCB Art.-No CF8M Art.-No WC Art.-No LCB Art.-No ) Please add code for the required cap or lifting device. See below. Dimensions and weights Metric Units Weight [kg] with bellows Center to face Inlet a [mm] Outlet b s Height (H4) Standard H max [mm] Bellows H max Support brackets A [mm] B C Ø 18 Ø 18 Ø 18 Ø 18 Ø 18 D E US Units Weight [lbs] with bellows Center to face Inlet a 7 1 / / / / / 8 [inch] Outlet b s 1 7 / / / / / 16 Height (H4) Standard H max / / / / / 2 [inch] Bellows H max / / / / / 16 Support brackets A 1 15 / / / / / 16 [inch] B 6 5 / / / / / 32 C Ø 23 / 32 Ø 23 / 32 Ø 23 / 32 Ø 23 / 32 Ø 23 / 32 D 1 5 / / / / / 16 P E 31 / / / / / 32 Code for lifting device Lifting device H2 H3 H4 H3 Bonnet closed closed closed open WCB 1.619, WC , LCB CF8M Support brackets 1/57

72 Pressure temperature ratings Orifice P Metric Units Valve size 4 P 6 4 P 6 4 P 6 4 P 6 4 P 6 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 Actual Orifice diameter d [mm] Actual Orifice area A [mm 2 ] Minimum [bar] S/G/L Minimum [bar] S/G Balanced bellows Inconel [bar] L Body material: WCB Pressure range p [bar] S/G/L Maximum -29 to 38 C to 232 C to 427 C Body material: CF8M Pressure range p [bar] S/G/L Maximum -268 to -6 C to -29 C to 38 C to 232 C to 427 C to 538 C Body material: WC Pressure range p [bar] S/G/L Maximum 233 to 427 C to 538 C P Body material: LCB Pressure range p [bar] S/G/L Maximum -46 to 38 C to 2 C to 343 C Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table The stated Pressure-Temperature Rating are taken from ASME B16.34 Table if the maximum pressure is not limited by API 526. Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and with the respective pressure-temperature range as well. 1/58

73 Pressure temperature ratings Orifice P US Units Valve size 4 P 6 4 P 6 4 P 6 4 P 6 4 P 6 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 Actual Orifice diameter d [inch] Actual Orifice area A [inch 2 ] Minimum [psig] S/G/L Minimum [psig] S/G Balanced bellows Inconel [psig] L Body material: WCB Pressure range p [psig] S/G/L Maximum -2 to 1 F to 45 F to 8 F Body material: CF8M Pressure range p [psig] S/G/L Maximum -45 to -76 F to -21 F to 1 F to 45 F to 8 F to 1 F Body material: WC Pressure range p [psig] S/G/L Maximum 451 to 8 F to 1 F Body material: LCB Pressure range p [psig] S/G/L Maximum -5 to 1 F to 4 F to 65 F P Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table The stated Pressure-Temperature Rating are taken from ASME B16.34 Table if the maximum pressure is not limited by API 526. Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and with the respective pressure-temperature range as well. 1/59

74 Selection chart Orifice Q 15 x 15 3L x 15 3 x 15 6 x 15 9 x x x 3 WCB X See 3 x X X WC6 See 3 x X X WCB WC6 T [ F] p [bar] T [ C] p [psig] CF8M 15 x 15 3L x 15 3 x 15 6 x 15 9 x x x X See 3 x X X 1 9 p [bar] Q CF8M T [ F] T [ C] p [psig] 1/6

75 Orifice Q Article numbers, dimensions and weights Article numbers Valve size 6 Q 8 6 Q 8 6 Q 8 6 Q 8 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 Actual Orifice diameter d [mm] Body material Actual Orifice area A [mm 2 ] WCB Art.-No CF8M Art.-No Use 6 Q WC Art.-No. 3 x LCB Art.-No ) Please add code for the required cap or lifting device. See below. Dimensions and weights Metric Units Weight [kg] with bellows Center to face Inlet a [mm] Outlet b s 68 Use 6 Q Height (H4) Standard H max x [mm] Bellows H max Support brackets A [mm] B C Ø 18 Ø 18 Ø 18 D E US Units Weight 487,3 487,3 487,3 [lbs] with bellows 57,2 57,2 57,2 Center to face Inlet a 9 7 / / / 16 [inch] Outlet b 9 1 / / / 2 s 2 11 / 16 Use 6 Q / / 16 Height (H4) Standard H max / 8 3 x / / 8 [inch] Bellows H max / / / 4 Support brackets A 14 9 / / / 16 [inch] B 8 9 / / / 32 C Ø 23 / 32 Ø 23 / 32 Ø 23 / 32 D 13 5 / / / 8 E 31 / / / 32 Code for lifting device Lifting device H2 H3 H4 H3 Bonnet closed closed closed open WCB 1.619, WC , LCB CF8M Q Support brackets 1/61

76 Pressure temperature ratings Orifice Q Metric Units Valve size 6 Q 8 6 Q 8 6 Q 8 6 Q 8 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 Actual Orifice diameter d [mm] Actual Orifice area A [mm 2 ] Minimum [bar] S/G/L Minimum [bar] S/G Balanced bellows Inconel [bar] L Body material: WCB Pressure range p [bar] S/G/L Maximum -29 to 38 C to 232 C to 427 C 5.5 Use 6 Q x Body material: CF8M Pressure range p [bar] S/G/L Maximum -268 to -6 C to -29 C to 38 C to 232 C 11.4 Use 6 Q to 427 C x to 538 C Body material: WC Pressure range p [bar] S/G/L Maximum 233 to 427 C to 538 C Use 6 Q 8 3 x Q Body material: LCB Pressure range p [bar] S/G/L Maximum -46 to 38 C to 2 C to 343 C Use 6 Q 8 3 x Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table The stated Pressure-Temperature Rating are taken from ASME B16.34 Table if the maximum pressure is not limited by API 526. Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and with the respective pressure-temperature range as well. 1/62

77 Pressure temperature ratings Orifice Q US Units Valve size 6 Q 8 6 Q 8 6 Q 8 6 Q 8 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 Actual Orifice diameter d [inch] Actual Orifice area A [inch 2 ] Minimum [psig] S/G/L Minimum [psig] S/G Balanced bellows Inconel [psig] L Body material: WCB Pressure range p [psig] S/G/L Maximum -2 to 1 F to 45 F to 8 F 8 Use 6 Q x Body material: CF8M Pressure range p [psig] S/G/L Maximum -45 to -76 F to -21 F to 1 F to 45 F 165 Use 6 Q to 8 F 8 3 x to 1 F Body material: WC Pressure range p [psig] S/G/L Maximum 451 to 8 F to 1 F Use 6 Q 8 3 x Body material: LCB Pressure range p [psig] S/G/L Maximum -5 to 1 F to 4 F to 65 F Use 6 Q 8 3 x Q Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table The stated Pressure-Temperature Rating are taken from ASME B16.34 Table if the maximum pressure is not limited by API 526. Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and with the respective pressure-temperature range as well. 1/63

78 Selection chart Orifice R 15 x 15 3L x 15 3 x 15 6 x 15 9 x x x 3 WCB X X X X WC X X WCB WC6 T [ F] p [bar] T [ C] p [psig] CF8M 15 x 15 3L x 15 3 x 15 6 x 15 9 x x x X X X X 1 9 p [bar] R CF8M T [ F] T [ C] p [psig] 1/64

79 Orifice R Article numbers, dimensions and weights Article numbers Valve size 6 R 8 6 R 8 6 R 1 6 R 1 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 Actual Orifice diameter d [mm] Body material Actual Orifice area A [mm 2 ] WCB Art.-No CF8M Art.-No WC Art.-No LCB Art.-No ) Please add code for the required cap or lifting device. See below. Dimensions and weights Metric Units Weight [kg] with bellows Center to face Inlet a [mm] Outlet b s Height (H4) Standard H max [mm] Bellows H max Support brackets A [mm] B C Ø 18 Ø 18 Ø 18 Ø 18 D E US Units Weight [lbs] with bellows Center to face Inlet a 9 7 / / / / 16 [inch] Outlet b 9 1 / / / / 2 s 2 11 / / / / 4 Height (H4) Standard H max / / / / 8 [inch] Bellows H max / / / / 8 Support brackets A 14 9 / / / / 8 [inch] B 8 9 / / / / 32 C Ø 23 / 32 Ø 23 / 32 Ø 23 / 32 Ø 23 / 32 D 13 5 / / / / 8 E 31 / / / / 32 Code for lifting device Lifting device H2 H3 H4 H3 Bonnet closed closed closed open WCB 1.619, WC , LCB CF8M R Support brackets 1/65

80 Pressure temperature ratings Orifice R Metric Units Valve size 6 R 8 6 R 8 6 R 1 6 R 1 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 Actual Orifice diameter d [mm] Actual Orifice area A [mm 2 ] Minimum [bar] S/G/L Minimum [bar] S/G Balanced bellows Inconel [bar] L Body material: WCB Pressure range p [bar] S/G/L Maximum -29 to 38 C to 232 C to 427 C Body material: CF8M Pressure range p [bar] S/G/L Maximum -268 to -6 C to -29 C to 38 C to 232 C to 427 C to 538 C Body material: WC Pressure range p [bar] S/G/L Maximum 233 to 427 C to 538 C R Body material: LCB Pressure range p [bar] S/G/L Maximum -46 to 38 C to 2 C to 343 C Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table The stated Pressure-Temperature Rating are taken from ASME B16.34 Table if the maximum pressure is not limited by API 526. Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and with the respective pressure-temperature range as well. 1/66

81 Pressure temperature ratings Orifice R US Units Valve size 6 R 8 6 R 8 6 R 1 6 R 1 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 6 x 15 Actual Orifice diameter d [inch] Actual Orifice area A [inch 2 ] Minimum [psig] S/G/L Minimum [psig] S/G Balanced bellows Inconel [psig] L Body material: WCB Pressure range p [psig] S/G/L Maximum -2 to 1 F to 45 F to 8 F Body material: CF8M Pressure range p [psig] S/G/L Maximum -45 to -76 F to -21 F to 1 F to 45 F to 8 F to 1 F Body material: WC Pressure range p [psig] S/G/L Maximum 451 to 8 F to 1 F Body material: LCB Pressure range p [psig] S/G/L Maximum -5 to 1 F to 4 F to 65 F R Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table The stated Pressure-Temperature Rating are taken from ASME B16.34 Table if the maximum pressure is not limited by API 526. Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and with the respective pressure-temperature range as well. 1/67

82 Selection chart Orifice T 15 x 15 3L x 15 3 x 15 6 x 15 9 x x x 3 WCB X See 3 x X WC6 See 3 x X WCB WC6 T [ F] p [bar] T [ C] p [psig] CF8M 15 x 15 3L x 15 3 x 15 6 x 15 9 x x x X See 3 x X 1 9 p [bar] CF8M T [ F] T [ C] T p [psig] 1/68

83 Orifice T Article numbers, dimensions and weights Article numbers Valve size 8 T 1 8 T 1 8 T 1 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 Actual Orifice diameter d [mm] 161,5 161,5 161,5 Actual Orifice area A [mm 2 ] Body material WCB Art.-No CF8M Art.-No Use 8 T WC Art.-No. 3 x LCB Art.-No ) Please add code for the required cap or lifting device. See below. Dimensions and weights Metric Units Weight [kg] with bellows Center to face Inlet a [mm] Outlet b s 62 Use 8 T 1 62 Height (H4) Standard H max x [mm] Bellows H max Support brackets A [mm] B C Ø 18 Ø 18 D E US Units Weight [lbs] with bellows Center to face Inlet a 1 7 / / 8 [inch] Outlet b s 2 7 / 16 Use 8 T / 16 Height (H4) Standard H max / 16 3 x / 16 [inch] Bellows H max / / 16 Support brackets A 18 1 / / 2 [inch] B C Ø 23 / 32 Ø 23 / 32 D 19 9 / / 16 E 31 / / 32 Code for lifting device Lifting device H2 H3 H4 H3 Bonnet closed closed closed open WCB 1.619, WC , LCB CF8M T Support brackets 1/69

84 Pressure temperature ratings Orifice T Metric Units Valve size 8 T 1 8 T 1 8 T 1 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 Actual Orifice diameter d [mm] Actual Orifice area A [mm 2 ] Minimum [bar] S/G/L Minimum [bar] S/G Balanced bellows Inconel [bar] L Body material: WCB Pressure range p [bar] S/G/L Maximum -29 to 38 C to 232 C to 427 C 4.5 Use 8 T x Body material: CF8M Pressure range p [bar] S/G/L Maximum -268 to -6 C to -29 C to 38 C to 232 C 4.5 Use 8 T to 427 C x to 538 C Body material: WC Pressure range p [bar] S/G/L Maximum 233 to 427 C to 538 C 15.5 Use 8 T 1 3 x Body material: LCB Pressure range p [bar] S/G/L Maximum -46 to 38 C to 2 C to 343 C 4.5 Use 8 T x T Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table The stated Pressure-Temperature Rating are taken from ASME B16.34 Table if the maximum pressure is not limited by API 526. Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and with the respective pressure-temperature range as well. 1/7

85 Pressure temperature ratings Orifice T US Units Valve size 8 T 1 8 T 1 8 T 1 Flange rating class Inlet x Outlet 15 x 15 3L x 15 3 x 15 Actual Orifice diameter d [inch] Actual Orifice area A [inch 2 ] Minimum [psig] S/G/L [psig] S/G Minimum [psig] L Body material: WCB Pressure range p [psig] S/G/L Maximum -2 to 1 F to 45 F to 8 F 65 Use 8 T x Body material: CF8M Pressure range p [psig] S/G/L Maximum -45 to -76 F to -21 F to 1 F to 45 F 65 Use 8 T to 8 F 65 3 x to 1 F Body material: WC Pressure range p [psig] S/G/L Maximum 451 to 8 F 3 81 to 1 F 225 Use 8 T 1 3 x Body material: LCB Pressure range p [psig] S/G/L Maximum -5 to 1 F to 4 F to 65 F 65 Use 8 T x Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table The stated Pressure-Temperature Rating are taken from ASME B16.34 Table if the maximum pressure is not limited by API 526. T Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and with the respective pressure-temperature range as well. 1/71

86 Flange drillings Type 526 Flange drillings according to DIN EN Standard API 526 Article-No. Flange drillings Material Inlet Inlet Outlet Outlet Valve Flange WCB LCB WC6 CF8M NPS PN PN PN PN PN PN PN PN PN NPS PN PN PN PN PN size class [DN] 1/ [DN] D 2 3 x 15 1) 2* 51* 6* 11* 25 H47 H47 H47 5 H15 H15 H15 H15 1 D 2 6 x 15 3* 52* 7* 12* 25 H11 H11 5 H15 H15 H15 H / 2 D 2 15 x 3 4* 53* 8* 13* 4 H11 H12 5 H15 H15 H15 H / 2 D 3 25 x 3 5* 54* 9* 14* 4 H12 H13 8 H15 H15 H15 H15 H16 1 E 2 3 x 15 1) 16* 56* 2* 25* 25 H47 H47 H47 5 H15 H15 H15 H15 1 E 2 6 x 15 17* 57* 21* 26* 25 H11 H11 5 H15 H15 H15 H / 2 E 2 15 x 3 18* 58* 22* 27* 4 H11 H12 5 H15 H15 H15 H / 2 E 3 25 x 3 19* 59* 23* 28* 4 H12 H13 8 H15 H15 H15 H15 H / 2 F 2 3L x 15 3* 511* 4* 4 H47 5 H15 H15 H15 H / 2 F 2 3 x 15 31* 512* 35* 41* 4 H47 H47 5 H15 H15 H15 H / 2 F 2 6 x 15 32* 513* 36* 42* 4 H47 H47 5 H15 H15 H15 H / 2 F 3 15 x 3 33* 514* 37* 43* 4 H11 H11 H11 H12 8 H15 H15 H15 H15 H / 2 F 3 25 x 3 34* 515* 38* 44* 4 H12 H13 8 H15 H15 H15 H15 H / 2 G 3 3L x 15 46* 517* 111* 4 H47 8 H15 H15 H15 H / 2 G 3 3 x 15 47* 518* 52* 112* 4 H47 H47 H11 8 H15 H15 H15 H / 2 G 3 6 x 15 48* 519* 53* 113* 4 H11 H11 H11 8 H15 H15 H15 H / 2 G 3 9 x 3 49* 52* 54* 114* 4 H11 H11 8 H15 H15 H15 H15 H16 2 G 3 15 x 3 5* 521* 55* 115* 5 H12 H13 8 H15 H15 H15 H15 H16 2 G 3 25 x 3 51* 522* 56* 116* 5 H14 8 H15 H15 H15 H15 H / 2 H 3 3L x * 524* 153* 4 H47 H47 H47 8 H15 H15 H15 H15 2 H 3 3 x * 525* 148* 154* 5 H47 H1 8 H15 H15 H15 H15 2 H 3 6 x * 5 H47 H1 8 H15 H15 H15 H15 2 H 3 6 x * 526* 155* 5 H47 H1 8 H15 H15 H15 H15 H16 2 H 3 9 x * 527* 15* 156* 5 H11 H11 8 H15 H15 H15 H15 H16 2 H 3 15 x 3 147* 528* 151* 157* 5 H11 H12 8 H15 H15 H15 H15 H16 2 J 3 3L x * 53* 197* 5 H47 H47 H47 H1 8 H15 H15 H15 H15 3 J 4 6 x * 532* 169* 199 * 8 H47 H1 1 H51 H51 H51 H51 3 J 4 9 x * 533* 17* 2* 8 H11 H11 1 H51 H51 H15 H15 H16 3 J 4 15 x 3 167* 534* 171* 21* 8 H11 H12 1 H51 H51 H15 H15 H16 1) 3L x 15 is available with the same Article-No. Note: Flange drillings and facings meet always the requirements of mentioned flange standards. Flange thickness and outer diameter may be thicker and wider than flange standard. For correct selection of bolting please refer to LWN 7-1. The inlet pressure size CL15 is not considered, please switch to inlet pressure size CL3 or CL3L. 1/72

87 Flange drillings Flange drillings according to DIN EN Type 526 Standard API 526 Article-No. Flange drillings Material Inlet Inlet Outlet Outlet Valve Flange WCB LCB WC6 CF8M NPS PN PN PN PN PN PN PN PN PN NPS PN PN PN PN PN size class [DN] 1/ [DN] K 4 3 x 15 1) 23* 536* 27* 212* 8 H47 H47 H47 H1 1 H51 H51 H15 H15 3 K 4 6 x 15 24* 537* 28* 213* 8 H47 H1 1 H51 H51 H15 H15 3 K 6 9 x 15 29* 8 H1 H11 H11 H12 15 H51 H51 3 K 6 9 x 15 25* 538* 214* 8 H1 H11 H11 H12 15 H51 H51 H15 H15 3 K 6 15 x 3 26* 539* 21* 215* 8 H1 H11 H11 H12 15 H51 H51 H15 H15 3 L 4 3L x * 541* 243* 8 H47 H47 H47 H1 1 H15 H15 H15 H15 4 L 6 3 x * 542* 238* 244* 1 H45 H47 H47 H1 15 H51 H51 4 L 6 6 x * 543* 239* 245* 1 H1 H11 H11 15 H51 H51 4 L 6 9 x * 544* 24* 246* 1 H11 H11 15 H51 H51 4 L 6 15 x 3 237* 545* 241* 1 H12 15 H51 H51 4 M 6 3 x 15 1) 581* 547* 584* 588* 1 H45 H47 H47 H1 15 H51 H51 4 M 6 6 x * 548* 585* 589* 1 H1 H11 H11 15 H51 H51 4 M 6 9 x * 549* 586* 1 H11 H11 H12 15 H51 H51 4 N 6 3L x 15 1) 591* 551* 594* 598* 1 H45 H47 H47 H1 15 H51 H51 4 N 6 6 x * 552* 595* 599* 1 H11 H11 15 H51 H51 4 N 6 9 x * 553* 596* 1 H12 15 H51 H51 4 P 6 3L x * 555* 654* 1 H45 H47 H47 15 H51 H51 4 P 6 3 x * 556* 55* 655* 1 H47 H47 15 H51 H51 4 P 6 6 x 3 648* 557* 551* 656* 1 H1 H11 15 H51 H51 4 P 6 9 x 3 649* 558* 552* 1 H11 H12 15 H51 H51 6 Q 8 3 x * 56* 66* 663* 15 H45 H47 H47 2 H5 H51 H52 6 Q 8 6 x * 561* 661* 664* 15 H1 H11 H11 2 H5 H51 H52 6 R 8 3L x * 563* 669* 672* 15 H45 H47 H47 H1 2 H5 H51 H52 6 R 1 3 x * 564* 673* 15 H47 H1 25 H5 H51 6 R 1 6 x * 565* 67* 674* 15 H47 H1 25 H5 H51 8 T 1 3 x 15 1) 676* 567* 677* 679* 2 H46 H47 25 H5 H51 1) 3L x 15 is available with the same Article-No. Note: Flange drillings and facings meet always the requirements of mentioned flange standards. Flange thickness and outer diameter may be thicker and wider than flange standard. For correct selection of bolting please refer to LWN 7-1. The inlet pressure size CL15 is not considered, please switch to inlet pressure size CL3 or CL3L. 1/73

88 How to order Type 526 with outlet flange rating class 3 Type 526 For customer specifications requiring a flange rating class 3 at the outlet LESER provides Type 526 with outlet flange rating class 3. For ordering please state the article numbers and option codes which are listed in the table. Orifice Outlet with flange class 3 Valve size Inlet x Outlet Center to face a x b Body material 3 x 3 6 x 3 Art.-No. Option code Art.-No. Option code D 1" x 2" WCB X H65, H8, J18, J X H67, H8, J18, J51 CF1M X H65, H8, J18, J X H67, H8, J18, J / 7 " x 5 1 / 3 " WC X H65, H8, J18, J X H67, H8, J18, J51 LCB D 1 1 / 2 " x 2" WCB X H65, H X H67, H8 CF8M X H65, H X H67, H8 4 1 / 8 " x 5 1 / 2 " WC X H65, H X H67, H8 LCB X H65, H X H67, H8 E 1" x 2" WCB X H65, H8, J18, J X H67, H8, J18, J51 CF1M X H65, H8, J18, J X H67, H8, J18, J / 7 " x 5 1 / 3 " WC X H65, H8, J18, J X H67, H8, J18, J51 LCB E 1 1 / 2 " x 2" WCB X H65, H X H67, H8 CF8M X H65, H X H67, H8 4 1 / 8 " x 5 1 / 2 " WC X H65, H X H67, H8 LCB X H65, H X H67, H8 F 1 1 / 2 " x 2" WCB X H65, H X H67, H8 CF8M X H65, H X H67, H8 4 7 / 8 " x 6" WC X H65, H X H67, H8 LCB X H65, H X H67, H8 G 1 1 / 2 " x 3" WCB X H65, H X H67, H8 CF8M X H65, H X H67, H8 4 7 / 8 " x 6 1 / 2 " WC X H65, H X H67, H8 LCB X H65, H X H67, H8 H 2" x 3" WCB X H65, H X H67, H8 CF8M X H65, H X H67, H8 6 1 / 16 " x 6 3 / 8 " WC X H65, H X H67, H8 LCB X H65, H X H67, H8 J 3" x 4" WCB X H65, H X H67, H8 CF8M X H65, H X H67, H8 7 1 / 4 " x 7 1 / 8 " WC X H65, H X H67, H8 LCB X H65, H X H67, H8 K 3" x 4" WCB X H65, H X H67, H8 CF8M X H65, H X H67, H8 7 1 / 4 " x 7 1 / 8 " WC X H65, H X H67, H8 LCB X H65, H X H67, H8 L 4" x 6" WCB X H65, H X H67, H8 CF8M X H65, H X H67, H8 7 3 / 4 " x 8 1 / 2 " WC X H65, H X H67, H8 LCB X H65, H X H67, H8 M 4" x 6" WCB X H65, H X H67, H8 CF8M X H65, H X H67, H8 7 3 / 4 " x 8 1 / 2 " WC X H65, H X H67, H8 LCB X H65, H X H67, H8 N 4" x 6" WCB X H65, H X H67, H8 CF8M X H65, H X H67, H8 7 3 / 4 " x 8 1 / 2 " WC X H65, H X H67, H8 LCB X H65, H X H67, H8 4" x 6" WCB X S X S1 Welded outlet flange CF8M X S X S1 P 8 7 / 8 " x 11 5 WC X S X S1 / 8 " LCB X S X S1 6" x 8" WCB X S X S1 Welded outlet flange CF8M X S X S1 Q 9 7 WC X S X S1 / 16 " x 12" LCB X S X S1 6" x 1" WCB X S X S1 Welded outlet flange CF8M X S X S1 R 9 7 / 16 " x 13 1 WC X S X S1 / 5 " LCB X S X S1 8" x 1" WCB X S1 Welded outlet flange CF8M X S1 T 1 7 / 8 " x 13 1 WC X S1 / 5 " LCB X S1 Note: Option code J51 (Lift restriction) not approved for ASME-applications. 1/74

89 Orifice 9 x 3 15 x 3 25 x 3 Art.-No. Option code Art.-No. Option code Art.-No. Option code Type 526 D D E E Outlet flange rating class 3 is standard flange rating class acc. to API standard 526 F G H J K L M N P Q R X X X Class 15 x X X H68, H X H68, H X H68, H X H68, H X H68, H X H68, H X H68, H X H68, H8 Welded outlet flange rating class 3 available on request. Design details Orifice D and E: 1 D 2 and 1 E 2 class 3 x 3 and 6 x 3 are realised by a modification of Type 458 DN 25 / 1". Orifice L: 4 L 6 class 9 x 3 and 15 x 3 can be realised by a welded outlet flange on request. Orifice M P: 4 M 6, 4 N 6 and 4 P 6 class 9 x 3 can be realised by a welded outlet flange on request. Orifice P T: 4 P 6 up to 8 T 1 are realised by a welded outlet flange class 3. Center to face dimensions: The center to face dimensions a and b for LESER Type 526 with outlet flange rating class 3 are not specified in API Standard 526. The actual dimensions are listed in the table. They differ from the dimensions which are specified in API 526 for safety valves with outlet flange class 15. Exceptions are the grey marked safety valves. T Grey marked safety valves The center to face dimensions are equal to API standard 526 with outlet flange rating class 15. 1/75

90 Flange facings Type 526 Flange facings Indication Standard Inlet Outlet Remark General Flange undrilled H38 H39 Linde-V-Nut, Form V48 Linde Standard 42-8 J7 J8 Groove: Rz 16 Linde-V-Nut, Form V48A LWN J5 J6 Groove: Rz 4, e.g. with hydrogen Lens seal form L (without sealing lens) DIN 2696 LWN J11 Acc. to DIN EN 192 Inlet Outlet Remark Flange facing PN 1 PN 63 PN 1 Rz-data according to PN 63 (see also LWN 313.4) PN 4 PN 4 PN 4 DIN EN 192 in µm Type B1 Raised face * * Facing: Rz = Type B2 L36 * L38 * Facing: Rz = Tongue face C 1) S5 H92 Groove face D 1) S5 H91 Male face E S5 H98 Female face F S5 H99 O-ring male face G S5 S1 O-ring female face H S5 S1 Acc. to ASME B16.5 Smooth finish 2) Serrated finish RTJ-groove Body material Inlet Outlet Inlet Outlet Inlet Outlet Inlet Outlet Option code Option code CL3 CL6 CL9 CL15 CL25 CL15 CL3 all all all L52 L53 * * L58 H63 1) According to DIN EN 192 groove depths and tongue heights increased compared to the formerly valid DIN (refer to LWN 313.4). LESER manufactures the groove at flanged valves by milling. If a customer demands a turned surface in the soil of the groove according to DIN 2512 and / or DIN EN an additional option code is necessary: S1: bottom of the groove drilled. Groove and tongue for PN16 flanges refer to DIN 2512 / LWN ) Smooth finish is not defined in the effective standards. For LESER s definition for smooth finish see page /5. For signs and symbols refer to page /5 Note: Flange drillings and facings meet always the requirements of mentioned flange standards. Flange thickness and outer diameter may vary from flange standard. J12 Stud-bolts length for flange connection inlet and outlet All LESER safety valves Type 526 need at the inlet side longer stud-bolts for the flange connections as stated in ASME B16.5, due to the full nozzle design. Furthermore, due to the actual castings the stud bolts at the outlet can differ from ASME B16.5 as well. LESER state the stud-bolt length in LWN 1.29-E. For calculation of stud-bolts length the measure s stated on page 1/1-1/13 can be used. Connection acc. to API Standard Valve size Flange rating class Orifice Option code Inlet Outlet Inlet D / E 1 1 / 2 " 3" drilled 2 1 / 2 " CL25 S1 F 1 1 / 2 " 3" drilled 2 1 / 2 " CL9 S1 G 1 1 / 2 " 3" drilled 2 1 / 2 " CL15 9 S1 J 2 1 / 2 " 4" CL9 15 S1 K 2 1 / 2 " 6" CL9 15 S1 1/76

91 Spare parts Components Item Materials Component Type Nozzle 7 Disc 7.5 Securing ring (Disc) 14 Split ring 57 Ball 59 Securing ring 6 Gasket 61 Ball 66 Screw 69 Axial needle bearing 73.2 Gasket (Lock screw) Spare parts recommendations The following recommendations for spare parts should be taken as a guideline. The actual needs for the replacement of parts depend on various conditions like operating temperature environment and operating pressure material selection medium These operating conditions have a significant influence on the product life of safety relief valves. Item Component Commision / start-up Two year operating Fife year operating Spare part kit 1 per valve 1 per valve 2 per valve 5 Nozzle 1 per 5 valves 7 Disc 1 per 5 valves 2 per 5 valves 1 per valve 12 Spindle 1 per 5 valves 15 Balanced bellows 1 per 5 valves 2 per 5 valves 1 per valve 1 per valve: per each supplied safety valve one piece shall be provided 1 per 5 valves: one spare part per 5 supplied equal safety valves Rework of seat and disc Minor damages on the seating surfaces of nozzle and disc can be repaired by lapping or by machining and successive lapping. For this purpose LESER offers the standard tool kit (Art.-No. 161.), which includes among others lapping stamps and lapping paste. 1/77

92 Spare parts Spare part kits Type 526 The spare part kit provides all spare parts which are recommended by LESER to be replaced during rework of a safety valve. Materials Item Component Material Quantity 7.5 Securing ring (Disc) Ti 14 Split ring L 57 Ball Securing ring 1) 316Ti Graphit/ Gasket 2) Graphit/ Ball Screw Gasket (Lock screw) ) Kits and : Kits don t contain securing ring due to re-usable ring bush in the safety valve. 2) Kit : Three additional gaskets are enclosed for use in type 5267 (WC6). Spare part kit Inlet flange rating class of the safety valve Orifice CL15 CL3L CL3 CL6 CL9 CL15 CL25 D E F G H J K L M N P Q R T /78

93 Spare parts Disc (Item 7) Metal to metal seat Disc (Item 7) Metal to metal seat Orifice Disc material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 Body material: WCB 1.619, LCB, WC Material-No. D E Hardened stainless steel F G Orifice Disc material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 3 H Hardened J stainless steel K Orifice Disc material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 15 L M N Hardened P stainless steel Q R T Type 526 Orifice Disc material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 Body material: CF8M Material-No. D E 316L stellited F stellited G Orifice Disc material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 3 H J 316L stellited stellited K Orifice Disc material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 15 L M N P 316L stellited stellited Q R T /79

94 Spare parts Disc (Item 7) Soft seal and O-ring (Item 7.4) Soft seal Type 526 Disc (Item 7) Soft seal: Material 316L Orifice Body material Material-No. Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 D X X X X X X X1 E X X X X X X X1 all F X X X X X X X1 G X X X X X X X1 Orifice Body material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 3 H X X X X X X1 J all X X X X X X1 K X X X X X X1 Orifice Body material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 15 L X X X X X X1 M X X X X X1 N X X X X X1 P all X X X X X1 Q X X X X1 R X X X X1 T X X X1 O-ring (Item 7.4) Orifice D O-ring material code: D (EPDM) X: 4 K (CR) X: 5 L (FPM) X: 7 C (FFKM) X: 9 Durometer: Body material Soft seal 7 75 IHRD Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 Material-No X X X X X X X1 E X X X X X X X1 all F X X X X X X X1 G X X X X X X X1 Orifice H Body material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x x X X X X X X1 J all X X X X X X1 K X X X X X X1 Orifice Body material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 15 L X X X X X X1 M X X X X X1 N X X X X X1 P all X X X X X1 Q X X X X1 R X X X X1 T X X X1 1/8

95 Spare parts Nozzle (Item 5) Nozzle (Item 5) Orifice Nozzle material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 Body material: WCB / 1.619, LCB Material-No. D CF8M E CF8M F CF8M G CF8M Orifice Nozzle material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 3 H CF8M J CF8M K CF8M Orifice Nozzle material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 15 L CF8M M CF8M stell N CF8M stell P CF8M stell Q CF8M stell R CF8M stell T CF8M stell Type 526 Orifice Nozzle material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 Body material: WC6 / Material-No. D CF8M stell E CF8M stell F CF8M stell G CF8M stell Orifice Nozzle material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 3 H CF8M stell J CF8M stell K CF8M stell Orifice Nozzle material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 15 L CF8M stell M CF8M stell N CF8M stell P CF8M stell Q CF8M stell R CF8M stell T CF8M stell LESER reserves to use the material / 316L alternatively. Material code: 27.YYXY.9 X: 4 not stellited X: 6 stellited 1/81

96 Spare parts Nozzle (Item 5), Split Ring Type 526 Nozzle (Item 5) Orifice Nozzle material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 Body material: CF8M / Material-No. D CF8M E CF8M F CF8M G CF8M Orifice Nozzle material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 3 H CF8M J CF8M K CF8M Orifice Nozzle material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x 15 L CF8M M CF8M stell N CF8M stell P CF8M stell Q CF8M stell R CF8M stell T CF8M stell LESER reserves to use the material / 316L alternatively. Material code: 27.YYXY.9 X: 4 not stellited X: 6 stellited Split Ring (Item 14) Material 316L Orifice Body material Material-No. Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 D E all F G Orifice Body material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 3 H J all K Orifice Body material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 15 L M N P all Q R T /82

97 Spare parts Balanced bellows (Item 15) and bellows conversion kits Bellows (Item 15) Material Inconel 625 / L Orifice Body material Material-No. Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 D E all F G Orifice Body material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 3 H J all K Orifice Body material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 15 L M N P all Q R T Type 526 Bellows conversion kits Orifice Body material Art.-No. Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 D E all F G Orifice Body material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 3 H J all K Orifice Body material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 15 L M N P all Q R T A conversion kit contains the following components: Item Component No. Item Component No. 8 Guide 1 11 Bonnet spacer / Cooling spool 1 12 Spindle 1 15 Bellows 1 55 Stud 4, 8, 12 depends on valve size 6 Gasket 2, 3 depends on valve size Installation instruction LWN /83

98 Spare parts Ball (Item 57 / Item 61) Type 526 Orifice D E F G Orifice H J K Orifice L M N P Q R T Ball (Item 57) Material Body material all Body material all Body material all Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 Material-No. Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 3 Ø 3 mm / 12 pieces Ø 3 mm pieces Ø 3 mm pieces Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 15 Ø 3 mm pieces Ball (Item 61) Material Orifice D E F G Orifice H J K Orifice L M N P Q R T Body material all Body material all Body material all Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 Material-No. Ø 9 mm Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 3 Ø 9 mm / Ø 15 mm Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 15 Ø 15 mm /84

99 Spare parts Gasket Body / bonnet (Item 6), Axial needle bearing (Item 69) Gasket (Item 6) Material Graphite / 316, Graphite / Orifice D Body material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 Material-No E all F G Orifice Body material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 3 H J all K Orifice WC Body material Flange rating class Other: x 15 3L x 15 3 x 15 6 x 15 9 x x 15 L M N P all Q R T Type 526 Axial needle bearing (Item 69) Material Orifice Body material Material-No. Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x 3 15 x 3 25 x 3 D E all F G Orifice Body material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 3 H J all K Orifice Body material Flange rating class 15 x 15 3L x 15 3 x 15 6 x 15 9 x x 15 L M N P all Q R T /85

100 Available Options For further information refer to Accessories and Options, page 99/1 Type 526 Butt-weld connection S5 Heating jacket O-ring disc J21: CR K J22: EPDM D J23: FKM L J2: FFKM C Disc with inserted sealing plate J44+S7: PTFE-FDA A J48+S7: PCTFE G J49+S7: SP T Open bonnet See Art.-No. Balanced bellows J83: Bellows INCONEL Conversion kit for balanced bellows See Art.-No. page 1/79 Screwed cap H2 H2 Plain lever H3 H3 Packed lever H4 H4 Bolted cap H1 K1 Bolted lifting device H6 K6 Lift indicator J39: Adaptor for lift indicator H4 J93: Lift indicator Test gag J69: H4 K5: H1 J7: H2 K27: H6 Bug screen M7 High temperature equipment J88 1/86

101 Approvals Approvals Orifice D E T Europe Coefficient of discharge K dr PED/DIN EN ISO Approval No Z12/2/26 S/G.45.8 L Germany Coefficient of discharge a w PED/AD 2-Merkblatt A2 Approval No. TÜV SV 182 United States S/G.45.8 L Coefficient of discharge K ASME Sec. VIII Div. 1 Approval No. M37246 M37224 Canada S/G Rated slope acc. to ASME VIII. Div. 1 UG-131 (d) (2) G: 1.99 SCFM/psia.81 S: 5.59 lb/hr/psia Approval No. M37257 M37235 L Rated slope acc. to ASME VIII. Div. 1 UG-131 (d) (2) GPM/ psid Coefficient of discharge K Canada: CRN Approval No. OG 873.9C S/G L Rated slope acc. to ASME VIII. Div. 1 UG-131 (d) (2) G: 1.99 SCFM/psia S: 5.59 lb/hr/psia.81 Rated slope acc. to ASME VIII. Div. 1 UG-131 (d) (2) GPM/ psid China Coefficient of discharge a w AQSIQ Approval No. For current approval no. see Russia S/G.45.8 L Coefficient of discharge a w GOST R / RTN Approval No. PPC Kazakhstan S/G.45.8 L Coefficient of discharge a w GOST-K Approval No. For current approval no. see Belarus S/G.45.8 L Coefficient of discharge a w GOSPROMNAZADOR Approval No. For current approval no. see Classification societies Homepage Bureau Veritas BV Det Norske Veritas DNV Germanischer Lloyd GL Lloyd s register EMEA LREMEA Registro Italiano Navale RINA U.S. Coast Guard U.S.C.G www uscg.org S/G.45.8 L The valid certification number is changed with every renewal. For a sample certificate including the valid certification number see Type 526 1/87

102 Capacities Steam Type 526 Capacities for saturated steam according to AD 2-Merkblatt A2, based on plus 1 % overpressure. Capacities at 1 bar (14.5 psig) and below are based on.1 bar (1.45 psig) overpressure. Metric Units AD 2-Merkblatt A2 [kg/h] Orifice D E F G H J K L M N P Q R T Act. Orifice dia. d [mm] Act. Orifice area A [mm 2 ] LEOS/G* ) [inch 2 ] Set pressure [bar] Capacities [kg/h] * ) LEO S/G = LESER Effective Orifice steam/gas please refer to page /7. How to use capacity-sheets refer to page /5 1/88

103 Capacities Steam Capacities for saturated steam according to ASME Section VIII (UV), based on plus 1% overpressure. Capacities at 2.7 bar (3 psig) and below are based on.27 bar (3 psig) overpressure. US Units ASME Section VIII [lb/h] Orifice D E F G H J K L M N P Q R T Act. Orifice dia. d [inch] Act. Orifice area A [inch 2 ] LEOS/G* ) [inch 2 ] Set pressure [psig] Capacities [lb/h] Type 526 * ) LEO S/G = LESER Effective Orifice steam/gas please refer to page /7. How to use capacity-sheets refer to page /5 1/89

104 Capacities Air Type 526 Capacities for air according to AD 2-Merkblatt A2, based on plus 1 % overpressure at C and 113 mbar. Capacities at 1 bar (14.5 psig) and below are based on.1 bar (1.45 psig) overpressure. Metric Units AD 2-Merkblatt A2 [m n 3 /h] Orifice D E F G H J K L M N P Q R T Act. Orifice dia. d [mm] Act. Orifice area A [mm 2 ] LEOS/G* ) [inch 2 ] Set pressure [bar] Capacities [m n 3 /h] * ) LEO S/G = LESER Effective Orifice steam/gas please refer to page /7. How to use capacity-sheets refer to page /5 1/9

105 Capacities Air Capacities for air according to ASME Section VIII (UV), based on plus 1 % overpressure at 16 C (6 F). Capacities at 2.7 bar (3 psig) and below are based on.27 bar(3 psig) overpressure. US Units ASME Section VIII [S.C.F.M.] Orifice D E F G H J K L M N P Q R T Act. Orifice dia. d [inch] Act. Orifice area A [inch 2 ] LEOS/G* ) [inch 2 ] Set pressure [psig] Capacities [S.C.F.M.] Type 526 * ) LEO S/G = LESER Effective Orifice steam/gas please refer to page /7. How to use capacity-sheets refer to page /5 1/91

106 Capacities Water Type 526 Capacities for water according to AD 2-Merkblatt A2, based on plus 1 % overpressure at 2 C (68 F). Capacities at 1 bar (14.5 psig) and below are based on.1 bar (1.45 psig) overpressure. Metric Units AD 2-Merkblatt A2 [1 3 kg/h] Orifice D E F G H J K L M N P Q R T Act. Orifice dia. d [mm] Act. Orifice area A [mm 2 ] LEOL* ) [inch 2 ] Set pressure [bar] Capacities [1 3 kg/h] * ) LEO L = LESER Effective Orifice liquids please refer to page /8. How to use capacity-sheets refer to page /5 1/92

107 Capacities Water Capacities for water according to ASME Section VIII (UV), based on plus 1 % overpressure at 21 C (7 F). Capacities at 2.7 bar (3 psig) and below are based on.27 bar (3 psig) overpressure. US Units ASME Section VIII [US-G.P.M.] Orifice D E F G H J K L M N P Q R T Act. Orifice dia. d [inch] Act. Orifice area A [inch 2 ] LEOL* ) [inch 2 ] Set pressure [psig] Capacities [US-G.P.M.] Type 526 * ) LEO L = LESER Effective Orifice liquids please refer to page /8. How to use capacity-sheets refer to page /5 1/93

108 Type 526 Determination of coefficent of discharge in case of lift restriction or back pressure Diagram for evaluation of ratio of lift / flow diameter (h/d ) in reference to the coefficient of discharge (K dr /a w ) Note: Lift restriction not approved for ASME-applications..9 Steam and Gases K dr = α w = f (h/d ).7 Liquids K dr = α w = f (h/d ) h = Lift [mm] d = Flow diameter [mm] of selected safety valve, refer to table article numbers h/d = Ratio of lift / flow diameter p a = Back pressure [bar a ] p = Set pressure [bar a ] p a/p = Ratio of back pressure / K dr = Coefficient of discharge acc. to DIN EN ISO a w = Coefficient of discharge acc. to AD 2-Merkblatt A2 K b = Back pressure correction factor acc. to API 52 topic Orifice E-K "S/G".6 Orifice E-K "L".6.5 Coefficient of discharge K dr / αw.5 Orifice L-T "S/G" Orifice D "S/G" , Ratio of lift / flow diameter h / d Coefficient of discharge K dr / αw.4 Orifice L-T "L" Orifice D "L" Ratio of lift / flow diameter h / d Diagram for evaluation of coefficient of discharge (K dr /a w ) or K b in reference to the ratio of back pressure / (p a /p ) Orifice D Orifice E T.5 K dr = α w = f (p a /p ) and K b = f (p a /p ) dr.9 K dr = α w = f (p a /p ) and K b = f (p a /p ) dr Coefficient of discharge K dr / αw Orifice D "S/G" Ratio of back pressure / p a / p Back pressure correction factor K b Coefficient of discharge K dr / αw.8 Orifice E-T "S/G" Ratio of back pressure / p a / p Back pressure correction factor K b How to use please refer to page /8. 1/94

109 Accessories and Options Contents Chapter/Page Caps and levers 99/2 Caps and levers bolted 99/4 Metal seat 99/6 Soft seal disc 99/8 Soft seal selection 99/1 Balanced bellows, Bug screen 99/12 High temperature equipment 99/15 INCONEL X-75 spring 99/16 O-ring damper 99/16 Lift indicator 99/17 Heating jacket 99/18 Options 99/1

110 Accessories and Options Caps and levers Subassembly item 4 Cap H2 Packed lever H a Plain lever H3 12 Test gag Cap H2: J7 Packed lever H4: J b BLOCKED Remove after testing 1 4 Test gag The test gag prevents the spindle from lifting and keeps the safety valve tight while the system pressure exceeds the set pressure. The test gag is used for: - to perform pressure tests in a system without dismantling of the safety valve - the individual adjustment of safety valves installed in the same system After testing the test gag must be removed because otherwise the safety valve cannot protect the system against unallowable overpressure! Options 99/2

111 Accessories and Options Caps and levers Subassembly item 4 Materials Steel Stainless steel Item Component Cap H2 Plain lever H3 Packed lever H4 Cap H2 Packed lever H4 1 Lever cover 2 Cap 3a Spacer 3b Hex screw 4 / 1.4 Shaft / bolt 1.5 Lifting fork 6 / 1.6 Lever 1.7 Washer 1.8 Nut 1.9 O-ring 1.9 Bushing 1 / 1.1 Retaining clip 1.1 Nut 1.1 Packing gland 1.11 Support ring 12 Spindle cap 13 Pin 14 Retaining clip 22 Plug 23 Seal 24 Seal wire 25 Sealing nose 93 Test gag 93.5 Washer Gr Gr CF8M Steel 316L Ti 316Ti B8M Steel 316L Steel 316Ti Gr Steel A2 / Poly H 8M Viton Viton Graphite Graphite Carbon steel Carbon steel Carbon steel Carbon steel Chrome steel L Carbon steel Carbon steel Carbon steel Carbon steel 316L Steel Steel Steel Steel 8M Ti 316Ti 316Ti Plastic Plastic Plastic Plastic Plastic Plastic Plastic Plastic Plastic Plastic Plastic Plastic L 316L 316L B8M B8M B8M B8M Fiber Fiber Fiber Fiber Fiber Fiber Fiber Fiber Please notice: Modifications reserved by LESER. LESER can upgrade materials without notice. Every part can be replaced by other material acc. to customer specification. Options 99/3

112 Accessories and Options Caps and levers bolted Subassembly item 4 Bolted Cap H1 K1 Bolted lifting device H6 K Test gag Bolted cap H1: K5 Bolted lifting device H6: K BLOCKED Remove after testing Discription of the test gag please refer to page 99/2. Options 99/4

113 Accessories and Options Caps and levers bolted Subassembly item 4 Materials Steel Stainless steel Item Component Bolted cap H1 Bolted lifting device H6 Bolted cap H1 Bolted lifting device H6 1.1 Lever cover 1.4 Shaft / bolt 1.5 Lifting fork 1.6 Lever 1.7 Washer 1.8 Nut 1.9 Bushing 1.1 Packing gland 2 Cap 3 Gasket 12 Spindle cap 13 Pin 14 Retaining clip 2 Stud 21 Nut 23 Seal 24 Seal wire 93 Test gag 93.5 Washer Gr CF8M Steel 316L CF8M CF8M Carbon steel 316Ti Steel Steel H 8M Graphite Graphite Graphite Graphite Chrome steel 316L Gr CF8M Graphite / Graphite / Graphite / 316L Graphite / 316L 316Ti 316Ti Carbon steel 316L Steel Steel 8M Ti 316Ti Steel Steel B8M B8M H 2H 8M 8M Plastic Plastic Plastic Plastic Plastic Plastic Plastic Plastic B8M B8M B8M B8M Fiber Fiber Fiber Fiber Fiber Fiber Fiber Fiber Please notice: Modifications reserved by LESER. LESER can upgrade materials without notice. Every part can be replaced by other material acc. to customer specification. The bolted cap is standard for the steel version orifice 6 R 1 and 8 T 1 Options 99/5

114 Accessories and Options Metal seat Nozzle item 5 and disc subassembly item 7 Type The LESER metal seats (disc and nozzle) are lapped to optical flatness to ensure a tight seal. LESER safety relief valves are supplied with standard leak tightness according to API 527. Improved tightness is available on request (option code J86) Type Stellited sealing surfaces The sealing surfaces of stainless steel disc and nozzle can be stellited by build-up welding. Stellite is a cobalt-chromium based, non-ferrous alloy with increased hardness, corrosion resistance and wear resistance up to high temperatures. LESER recommends stellited sealing surfaces for Type 526 valves in the following cases: Materials for disc and nozzle see page 99/7. high pressure applications, due to the high stress of the sealing surfaces high temperature applications to avoid a permanent deformation of the sealing surfaces, due to the material properties of the seat and disc applications with abrasive fluids to increase the wear resistance of the sealing surfaces The stellited sealing surfaces of disc and nozzle are standard for high pressure and high temperature designs; see table materials page 99/7. Hardness metal seat Material Hardness of sealing surfaces EN ASME Values from standards or manufacturers specification Average value LESER stock EN 188-3, hardened Hardened stainless steel 4 HRC LWN Harding procedure HRC EN 1272, SA L 215 HBW EN 1272 Table HRC 1) EN 1272, stellited SA L stellited 35 HRC Manufacturers specification 4 HRC DIN EN 1213, SA 351 CF8M 22 HRC LWN HRC 1) DIN EN 1213, stellited SA 351 CF8M stellited 35 HRC Manufacturers specification 4 HRC HBW: BRINELL hardness acc. DIN EN ISO / HRC: ROCKWELL hardness acc. DIN EN ISO ) Rockwell hardness values below 2 HRC are not allowed according to DIN EN ISO Lower, fictitious values were created for better comparison. Options 99/6

115 Accessories and Options Metal seat Nozzle item 5 and disc subassembly item 7 Materials Disc Subassembly item 7 Steel Stainless steel Standard Stellited Standard Stellited Item Component Option code J25 + L44 Option code * 7.1 Disc 7.2 Lifting aid 7.5 Securing ring hardened stellited stellited stellited Hardened stainless steel 316L stellited 316L stellited 316L stellited L 316L 316L 316L Ti 316Ti 316Ti 316Ti Material Nozzle Item 5 Flange rating class inlet CL15 CL3L CL3 CL6 CL9 CL25 Body material: WCB, LCB Orifice D L M T D L 1) M T D R D P Body material: WC6 Material stel stel stellited stellited CF8M CF8M stel. CF8M CF8M stel. CF8M stellited CF8M stellited Orifice D T D T D R D P Material stellited stellited stellited CF8M stellited CF8M stellited CF8M stellited Body material: CF8M Orifice D L M T D L 1) M T D L 2) M R D P Material stel stel stel stellited CF8M CF8M stel. CF8M CF8M stel. CF8M CF8M stel. CF8M stellited Options Stellited, if not standard Nozzle material 1.444/316L Nozzle material 1.444/316L stellited Option code L62 L64 L65 1) Orifice J and L, CL3 is stellited 2) Orifice H CL6, Orifice J CL6 and Orifice K CL6 are stellited The standard facing for nozzles is serrated finish (SF). All nozzles with facings deviating from the standard such as RTJ-groove are made out of the material 1.444/ 316L. Options 99/7

116 Accessories and Options Soft seal disc Subassembly item 7 LESER soft seal solutions allow for superior tightness. Features and Benefits two different designs with o-ring or sealing plate for a wide variety application large selection of soft seal materials to best adapt to the application increased service life of sealing surfaces compared to a metal to metal seat simple replacement of the soft seal reduces maintenance costs standard ARP O-ring sizes for easy worldwide procurement one standard durometer per O-ring material for all s to reduce stocking expenses Design of soft seal Type 526 O-ring disc Disc with sealing plate Design For temperature limits, medium resistance and option codes please refer to the soft seal selection table, page 99/1 99/11. Materials for soft seal discs see page 99/9. Tightness Tightness requirements and tightness tests of LESER safety valves are adapted to the requirements of API 527. The tightness requirements are fixed in LESER work standard LGS 21. Increased tightness Standard tightness requirements Option code J86 Disc design d 16 mm d > 16 mm d 16 mm d > 16 mm Metal to metal sealing Number of bubbles [bubbles / min] 4 8 acc. to API 527 Number of bubbles [bubbles / min] 2 4 acc. to API 527 Number of bubbles [bubbles / min] 2 4 acc. to API 527 Number of bubbles [bubbles / min] 1 2 acc. to API 527 Options O-ring disc acc. to API 527 acc. to API 527 Disc with sealing plate /8

117 Accessories and Options Soft seal disc Subassembly item 7 Materials O-ring disc Item Component Steel Stainless steel 1 Disc with lifting aid 3 Retainer L 316L L 316L 4 O-ring See soft seal selection table, page 99/1 See soft seal selection table, page 99/1 5 Nut M 8M Materials Disc with sealing plate Item Component Steel Stainless steel 1 Disc with lifting aid 3 Retainer L 316L L 316L 4 Sealing plate See soft seal selection table, page 99/1 See soft seal selection table, page 99/1 5 Nut M 8M Options 99/9

118 Accessories and Options Soft seal selection Soft seal selection Abbrevation ASTM 1418 Trade name (Designation) Codeletter 1) Option Code Tmin Tmax [ C] [ F] [ C] [ F] Application 2) O-ring CR Neoprene K J Parafin oil, silicone oil and grease, water and waterbased solvents, refrigerants, ozone NBR Buna-N (Nitrile-Butadiene) N J Hydraulic oil, vegetable and animal grease and oil EPDM Buna-EP (Ethylene-Propylene- Dine) D J Hot water and superheated steam up to 15 C, 32 F, some organic and inorganic acids, silicone oil and grease, FDA compliant FKM Viton (Fluorocarbon) L J High temperature service (no superheated steam), mineral oil and grease, silicone oil and grease, vegetable and animal grease and oil, ozone, FDA compliant compound available on request FFKM Kalrez (Perfluor) Sealing plate (Special design, Option code S7) SP PCTFE PTFE VESPEL SP-1 (Polyimide) KEL-F (Polychlorotrifluoroethylene) Teflon (Polytetrafluoroethylene) Other than listed C J T G A X J49 + S7 J48 + S7 J44 + S Nearly all chemicals For other materials please contact your local representative or sales@leser.com 1) The code letters will be stamped on the disc (Item 1). 2) Pressure and temperature service must be considered in any case. Chemical resistance information is supplied by the O-ring manufacturer. LESER can not take any warranty. Nearly all chemicals, standard compound is Kalrez 6375 with steam resistance, FDA compliant compound available on request High temperature and high pressure applications (no steam), for chemical resistance refer to manufacturers guide Cryogenic and refrigeration applications, flammable media applications, (e.g. gaseous oxygen) up to 5 bar, 725 psig at 6 C, 14 F Options 99/1

119 Accessories and Options Soft seal selection Soft seal disc Set pressure and size limits O-ring Material NBR N J3 CR K J21 EPDM D J22 FKM L J23 FFKM C J2 Sealing plate (Special design, Option code S7) Pressure range min. Pressure range max. [bar] [psig] [bar] [psig] Orifice D K L M N P Q R T SP T J D G PCTFE G J D T PTFE A J D T Options 99/11

120 Accessories and Options Balanced bellows Subassembly item 15 LESER is able to provide a balanced bellows design through the use of Balanced bellows. Balanced bellows are generally used for two applications: to compensate for back pressure to seal off the bonnet from the outlet chamber A B Compensation for back pressure The back pressure acts on the reverse side of the disc, creating a force in the closing direction (F c ) of the safety valve. The magnitude of this force depends on the seat area and the level of the back pressure. The balanced bellows constitute an opposite area with the same area like the seat. The back pressure acts on, thereby reducing or eliminating the closing force. This reduction of the force in the closing direction can be viewed as a compensating force acting in the opening directon (F o ). p a A S F O F C A quantitative representation is shown in the table below: Actual area Back pressure Actual force Direction of force Compensation criteria Seat area = A S p a F C = p a x A S closing A S = A B Bellows area = A B p a F O = p a x A B opening F C = F O Sealing the bonnet from the outlet chamber LESER s balanced bellows reliably seal the bonnet from the outlet chamber; protecting the guide, moving parts and the spring from problems associated with the fluid, such as dirt, corrosion, impurities of temperature. Balanced bellows Type 526 Orifice D 6 R 8 6 R 1 8 T 1 Design NPT 1 / Bonnet spacer * Exception: Valve 1 1 / 2 D 3 and 1 1 / 2 E 3 without bonnet spacer Bellows housing * * Exception: 6 R 1 without bellows housing The bellows housing protects the bellows against turbulences during discharge to avoid bellows vibration and to guarantee a longer life-time. Control thread ASME B1.2.1 NPT 1 / 2 * * A control thread ASME B1.2.1 NPT 1 / 2 is fitted into the bonnet to monitor the condition of the bellows. A discharge pipe can be fitted to the NPT 1 / 2 control thread to allow safe discharge of aggressive or toxic fluids. Option code Standard bellows J83 J83 Other materials than stand. S15 + material designation S15 + material designation Options The dimensions and weights of a safety valve with balanced bellows are displayed in the tables Dimensions and weights. The temperature range is displayed in the tables Pressure temperature ratings. 99/12

121 Accessories and Options Balanced bellows Subassembly item 15 Material Item Component Material 11 Bonnet spacer 15.1 Upper end piece 15.2 Lower end piece 15.3 Balanced bellows Type 5262: Carbon steel 316L L L INCONEL 625 Standard bellows in INCONEL 625 Due to the thin-walled, bellows are the most sensitive components of the safety valve in relation to corrosion and temperature load. To increase the life cycle of the bellows, in corrosive and high temperature applications as well, LESER offers from October 21 INCONEL 625 as standard material for the balanced bellows in the API Series 526. The higher grade INCONEL 625 replaces the stainless steel material 316Ti / Bellows material INCONEL 625 INCONEL 625 is a nickel base material and compared to 316 stainless steel it provides significantly better corrosion resistance especially in applications where chlorides are present high temperature resistance LESER uses only INCONEL 625 LCF or INCONEL 625 with equivalent properties to INCONEL 625 LCF. The minimum criterion for every bellows is 1. load cycles which is a very high value compared to the operating conditions of most safety valves. = INCONEL and 625 LCF are trademarks of the Special Metals Corporation group of companies. End connections LESER s bellows design is such that at both ends the bellows has welded end pieces which connect the bellows to the disc and the guide. The two end pieces of the standard bellows remain in stainless steel 316L. Interchangeability The old stainless steel bellows and the new INCONEL 625 bellows are one to one interchangeable without the need to change other components of the valve. Ordering With the introduction of the INCONEL 625 bellows LESER will also make the ordering for Type 526 easier. It will no longer be necessary to distinguish between closed bonnet and open bonnet. Option code J83 will be sufficient to order a balanced bellows for both. Options 99/13

122 Accessories and Options Bug screen 1 2 The bug screen is screwed in at safety valves with bellows at the bonnet vent in order to prevent the intrusion or rather nesting of beetles, termites, ants etc. at the bonnet space. Such nest-building especially at the spindle guide can lead to disfunction of the safety valve. This danger occurs only at plants for gases and liquids and in environments supporting high insect populations. The function of bellows or rather safety valves will not be hindered by the bug screen. The option code for ordering is M7. Material Item Component Steel design Stainless steel 1 9 bow NPT 1 / 2 " Steel Stainless steel 2 Screen NPT 1 / 2 " Stainless steel Stainless steel Balanced bellows conversion kits LESER balanced bellows conversion kits are available to convert from a convential design into a balanced bellows design with little effort. The conversion kits contain all the necessary parts for conversion as well as instructions. For article no. and spare parts please refer to spare part page 1/83. Conversion kits Item Component Quantity Material 8 Guide 11 Bonnet spacer / Cooling spool 12 Spindle 15 Bellows 55 Stud 6 Gasket Installation instruction LWN L L L / INCONEL 625 / 316L 4, 8, 12 depends on valve size B8M 2, 3 depends on valve size Graphite / Graphite / Options 99/14

123 Accessories and Options High temperature equipment For fluid temperatures higher than 4 C/ 752 F high temperature equipment is necessary to protect the inner parts and the spring against inadmissible influence of temperature. The maximum inlet temperature is 538 C/1 F. The equipment shown is only fitted in Type For all other Types an open bonnet and a balanced bellows is necessary for fluid temperatures exceeding 4 C/752 F up to max. 45 C/842 F. Specification Type 5267 Design Option code J88 Operating conditions Temperature limits [ C] > 4 fluid temperature [ F] max. [ C] max. [ F] > 752 fluid temperature 538 inlet temperature 1 inlet temperature Materials High temperature equipment Item Component 1 Body 5 Nozzle 7 Disc 9 Bonnet open 11 Cooling spool 15 Bellows 54 Spring 55 Studs 56 Nuts WC stellited CF8M stellited stellited 316L stellited WCB L / Inconel 625 / 316L 1.712, High temperature alloy steel B M Options 99/15

124 Accessories and Options Inconel X-75 Spring LESER offers the spring material INCONEL X-75 / as an Option of Type 526 for all valve sizes and the complete pressure range. Applications INCONEL X-75 is recommended in the following applications: Sour gas applications acc. to NACE MR 175 and NACE MR 13: if NACE conditions are present at the outlet of the safety valve (NACE Level 2). INCONEL X-75 is a spring material which is recommended in the NACE standards. High temperature applications: INCONEL X-75 allows higher operating temperatures than other standard spring materials. With a spring in INCONEL X-75 it is possible to use a conventional safety valve with closed bonnet for medium temperatures of 538 C/1 F without the need of a bellows for spring heat protection. Highly corrosive applications: applications that require a spring material with a corrosion resistance superior to that of stainless steel, e.g. seawater applications. Option Code Option code X8: Spring material INCONEL X-75 Ordering The option code for ordering is X8. Spring part numbers and pressure limits can be taken from the actual spring charts LGS 363. O-ring damper The O-ring damper can be employed to suppress or reduce oscillations of moving parts in a safety valve. LESER has ensured proper performance of the O-ring damper through extensive tests at its certified test labs. For applications according to CE/VdTUEV O-ring damper are available on request. If an O-ring damper is required further testing must be performed, which will require a longer lead time; please contact sales@leser.com. Safety valves with O-ring damper are not designated in the ASME code. Cap H2 Packed lever H4 Options 99/16