Oblique, Vertical & Angle Patterns. Sizes: 1 /4 2 (8 50 mm) ASME Classes: Power Generation Oil & Gas Refining & Petrochemical

Transcription

1 Oblique, Vertical & Angle Patterns Sizes: /4 (8 mm) ASME Classes: 0 Power Generation Oil & Gas Refining & Petrochemical

2 PROFILE Velan is one of the world's leading manufacturers of industrial steel valves, supplying gate, globe, check, ball, butterfly and knife gate valves for critical applications in the chemical, petrochemical, oil and gas, fossil and nuclear power, cogeneration, pulp and paper and cryogenic industries. See the back cover of this catalog for a summary of the many quality products that Velan designs and manufactures. Founded in 9, Velan earned a reputation for excellence as a major supplier of forged valves for nuclear power plants and the U.S. Navy. Velan Inc. pioneered many designs which became industry standards, including bellows seal valves, all stainless steel knife gate valves and forged valves up to 4". Velan valves are manufactured in specialized manufacturing plants, including five in Canada & U.S.A., four in Europe and three in Asia. We have over, employees, 75% of whom are located in our North American operations. Velan Valves Ltd. U.K. is Velan s manufacturing company for steam trap and bonnetless globe valves and offer outstanding quality at highly competitive prices. CONTENTS Velan s Global Network Bonnetless Globe Valve Design Features Materials & Options Vertical Pattern Oblique Pattern Angle Pattern Piston Check Pattern Continuous Blowdown Angle Pattern Engineering Data Tandem Units Flange dimensions PressureTemperature Ratings Installation/Service How to Order HEAD OFFICE & PLANT 5 MONTREAL, CANADA 5,000 sq. ft. (0,68 m ) 60 ( 0 mm) dual plate check valves, 48 (80 00 mm) tripleoffset butterfly valves, 8 (0 mm) metal & resilient seated ball valves MANUFACTURING LOCATIONS CANADA VELAN INC. HEAD OFFICE & PLANT Côte de Liesse Montreal, QC H4T G Tel: (54) Fax: (54) PLANT 5 Ward Avenue Montreal, QC H4M T6 Tel: (54) Fax: (54) PLANT / 7 5 McArthur Ave. Montreal, QC H4T X8 Tel: (54) Fax: (54) 40 PLANT 4 / 6 00 Cowie Street Granby, QC JJ E7 Tel: (4) 7805 Fax: (4) U.S.A. VELAN VALVE CORPORATION PLANT 94 Avenue C Williston, VT Tel: (80) 8656 Fax: (80) 864 ENGLAND VELAN VALVES LTD. Unit, Pinfold Road Lakeside Business Park Thurmaston Leicester LE4 8AS Tel: Fax: ITALY VELAN SRL Via Delle Industrie 9/5 00 Mezzago, Tel: (9) Fax: (9) FRANCE VELAN S.A.S 90, rue Challemel Lacour F Lyon Cedex 7 Tel: () Fax: () PORTUGAL VELAN VÁLVULAS INDUSTRIAIS, LDA. Av. Ary dos Santos Famoes Tel: (5) Fax: (5) TAIWAN VELANVALVAC P.O. Box 00 Taichung, Taiwan R.O.C. Tel: (04) Fax: (886) KOREA VELAN LTD ShingilDong Ansan City, Kyunggido 458 Tel: (8) 498 Fax: (8) 498 DISTRIBUTION CENTERS U.S.A. VELCAL 57 Stone Road, Unit "A" Benicia, CA 94 Tel: (707) Fax: (707) VELEAST 605 Commerce Park Drive SE Marietta, GA 0060 Tel: (770) 00 Fax: (770) 706 VELNORTH 94 Avenue C Williston, VT Tel: (80) Fax: (80) ENGLAND VELAN VALVES LTD. Unit, Pinfold Road Lakeside Business Park Thurmaston Leicester LE4 8AS Tel: Fax: GERMANY VELAN GmbH Daimlerstrasse 8 D47877 Willich Tel: (49) Fax: (49) GENERAL INFORMATION Tel: +44 (6) 6957 Fax: +44 (6) sales@velan.co.uk Velan has sales offices & distributors located worldwide. Visit the Velan website at for an updated contact list. NOTE: The material in this catalog is for general information only and shall not be used for specific performance data and material selection without first consulting Velan. Velan reserves the right to change designs, materials or specifications without notice. Velan does not accept any liability or damages arising from the use of information in this catalog. 006 Velan Inc. All Rights Reserved.

3 VELAN S GLOBAL NETWORK Plant Plant Plant MONTREAL, CANADA 09,000 sq. ft. (0,6 m ), 4 4 (8 00 mm) forged gate, globe & check valves LYON, FRANCE Velan S.A.S 60,000 sq. ft. (4,900 m ) 4 4 (8,0 mm) forged & cast steel gate, globe and butterfly valves MILAN, ITALY Velan SRL 9,000 sq. ft. (8,0 m ) 64 (5 mm) API 6D & 6A trunnion mounted ball valves Plant & 7 Plant + Distribution Center Distribution Center MONTREAL, CANADA 70,000 sq. ft. (5,800 m ), 60 ( 0 mm) forged & cast steel gate, globe, check, ball, knife and 6 ( mm) butterfly valves LEICESTER, ENGLAND Velan Valves Ltd 4,000 sq. ft. (,00 m ) steam traps, 8 (0 mm) bonnetless globe valves WILLICH, GERMANY Velan GmbH,000 sq. ft. (,5 m ) Plant Distribution Center WILLISTON, VT, U.S.A. Velan Valve Corp. 55,000 sq. ft. (4,0 m ) 4 ( mm) forged & cast steel gate, globe and check valves VELNORTH 8,000 sq. ft. (74 m ) Manufacturing Plants 5 Stocking Distribution Centers 7 Sales Offices Over 00 Distributors in Over 0 Locations Over 70 Service Shops Plant ANSAN CITY, SOUTH KOREA Plant 0,000 sq. ft. (,800 m ) components and 4 ( 00 mm) cast steel valves Plant 4 & 6 Plant Plant GRANBY, CANADA 86,0 sq. ft. (7,5 m ), 6 ( 0 mm) cast steel gate, globe and check valves, 4 (8 00 mm) ball valves LISBON, PORTUGAL 60,000 sq. ft. (5, m ) ( 00 mm) cast steel gate, globe & check valves ANSAN CITY, SOUTH KOREA Plant 65,000 sq. ft. (5,800 m ), ( 00 mm) cast steel gate, globe, check, ball and knife gate valves Distribution Center Distribution Center Plant MARIETTA, GA, U.S.A. VELEAST 6,0 sq. ft. ( m ) BENICIA, CA, U.S.A. VELCAL 5,000 sq. ft. (,0 m ) TAICHUNG, TAIWAN VelanValvac 0,000 sq. ft. (,8 m ) 4 (8 mm) ball valves

4 VELAN FORGED ONEPIECE VELAN BONNETLESS VALVES General valve design (pressure/temperature ratings and body wall thickness) is in accordance with ASME B6.4. Special and Limited classes are available subject to service conditions. Valves conform to the European Pressure Equipment Directive 97//EC (the PED). COMPLETE RANGE OF AUTOMATION CAPABILITIES The sturdy valve yoke allows for easy adaptation to accept most electric, pneumatic or hydraulic actuators for automated processes. DROP FORGED ONEPIECE BODY This feature removes the need for a separate bonnet and therefore eliminates: leakage path through gaskets seized bonnet fixings weld removal on welded bonnet designs. The closed die forge process used for Velan valve bodies offers the advantage of a uniform metallic structure, greater density, higher strength integrity and higher fatigue resistance to creep when compared to castings. Forgings also eliminate the formation of pipe seams found in bar stock construction and porosity in thin wall castings. Carbon steel valves are finished externally by a phosphating process to enhance protection against wear and corrosion. Other finishes are available to order. TIGHT SEATING The proportions of the valve and standard material selection combine to maintain seat tightness during cooldown and warmup. PERFECT ALIGNMENT The use of purpose made machine tools ensures perfect alignment of all critical components and burnishing tools finish the packing chamber wall to 6RMS or better. The precision main seat is aligned with special tooling during the seal welding process ensuring perfect disc/stem function. GLAND SEAL The size and depth of the packing chamber together with tightly controlled machining tolerances on both body and stem provide the tightest possible seal. Live loading is available to order. UNIVERSAL VALVE These valves have many 'standardised' components which means that only the disc and stem need be changed to convert globe/stop valves to stopcheck, needle or flow control. This results in reduced inventory and lower cost of stock and spares. END CONNECTIONS End connections are in accordance with ASME standards. The versatile nature of the design means that many other end connections (especially flange types) can be accommodated. Flanges and pipe pups are attached to the body by full penetration welds using ASME & BS EN approved welders and procedures. End to end and face to face dimensions are in accordance with ASME B6.0 or special to order. HANDWHEEL Manufactured from a malleable iron casting, the handwheel is generously proportioned to reduce operator effort when closing the valve. YOKE BUSH Manufactured as standard from high tensile bronze, this component provides a sturdy guide for the stem together with excellent antigalling properties. Extra long stem thread engagement ensures perfect alignment. Other materials are available to order, especially when copper or copper bearing alloys are prohibited. GLAND FIXINGS The gland fixings consist of two allthread studs, each complete with heavy series UNC nuts. Various materials are available, see page 6. BACK SEAT & RETAINER This feature enables the packing chamber to be completely isolated from line pressure when the valve is fully open. The hardened stainless steel selfaligning backseat is held in position by a threaded retainer (with left hand thread to prevent loosening when opening the valve) and forms a pressure tight seal with the body thanks to a precisely machined conical bevel. It also forms a pressure tight seal with the mating cone on the valve stem. The back seat is pressure tested to confirm integrity with both body and stem. Caution: Most valve standards and codes of practice caution users that successful completion of a back seat pressure test should not be construed as a recommendation by the manufacturer that the gland packing may be replaced with the valve under pressure. MAIN SEAT Normally manufactured from 6 type stainless steel and provided with a heavy Stellite deposit, the main seat is a precision component vital for positive shutoff. In the unlikely event of seating surface damage, a sufficient depth of hardfacing allows the seat to be recut without the need for complete replacement. BOTTOM SERVICE PLUG This feature allows the main seat to be replaced while the valve is in line. Standard bottom plugs are manufactured from the same material specification as the body and are screwed and seal welded. Gasketed plugs and full penetration welded caps are also available to order (see pg. 6). 4

5 BONNETLESS GLOBE VALVE STEM Materials vary according to the trim requirements but all stems are precision machined and have the following features: one piece anti blowout design with precision ground back seat cone. ground or burnished packing journal diameter giving 8 RMS or better. full depth ACME threads formed by either cutting or rolling, dependant upon trim and material. generously proportioned square for handwheel drive. domed button Thead to provide adequate articulation of globe/stop discs and reduced closing torque. SPLIT GLAND BUSH In combination with the forged steel gland flange, this two piece gland follower is generously proportioned to provide adequate packing compression. A raised lip prevents the bushing from complete entry into the packing chamber. Removal of the bushing set allows adequate access for packing replacement or withdrawal of the valve internals. A complete range of service tools is available to order. GLAND PACKING Standard material is a combination of braided and dieformed graphite (nonasbestos) rings and guarantees superior sealing. Other packing materials are available to order including chevron styles. DISC Globe/stop discs are manufactured from solid Stellite investment castings. The seating face has line contact with the mainseat to ensure positive shutoff. The long engagement length with the body on globe/stop valves provides accurate selfaligned seating and minimizes chattering under throttling conditions. With the valve fully open, the disc retracts out of the flow path thus minimizing wear through reduced vibration. A Tslot or horseshoe feature is used to connect the disc and stem on globe/stop valves, enabling quick and easy replacement. Ample clearance eliminates binding or seizure. See page 6 for standard disc designs. The stem and disc on needle and continuous blowdown valves are of onepiece integral design making them ideal for services with high pressure drop. Flow control discs are of V port style to give approximately proportional flow throughout valve lift and are fully guided to minimize spinning under high flow conditions. 5

6 MATERIALS, SPECIFICATIONS & OPTIONS STANDARD MATERIALS PART () See page 9 for Codes. () Other materials available. MATERIAL Code 0 () Code 06 () Code /0 () Code () Code 4 () Body A05N A8 (C. Max. F Bottom Plug 0.5) (Class ) A8 F6/F6H A8 F5 A8 F9 Main Seat Gr.6 Stellited A8 F5 Stellited Gr.6 Stellited D Globe Investment Cast Stellite 6 IS Needle Integral with stem SDNR Gr.6 Stellited C Flow Control Gr.6 Stellited S TE Globe Gr. Hardened Gr.6B Gr.60 Gr.66 or Gr. 660 Needle Gr.6B Stellited F5 Stellited Gr.6B Stellited M () SDNR Gr. Hardened Gr.6B Gr.66 or Gr. 660 Flow Control Gr. Hardened Gr.6B Gr.60 Gr.66 or Gr. 660 Backseat BS.S4 Backseat Retainer BS.46 ANC0 Packing Washer Gr.6 Commercial GLAND Ends Braided Graphite, Inconel reinforced, split PACKING Inners Die formed Graphite, solid Split Gland Bush BS.46 CL.A BS.46 ANC4A BS.46 CL.A Gland Flange A05N F6 A05N Gland Stud ASTM A94 B7 ASTM A94 B8M ASTM A94 B7 Gland Nut ASTM A9 H ASTM A9 8M ASTM A9 H Yoke Bush BS.874 CZ4 Handwheel Malleable Iron ASTM A47 Handwheel Nut Carbon Steel Commercial Nameplate Aluminium Commercial Globe Stop STANDARD DISC OPTIONS Needle (integral) STANDARD FIGURE NUMBERS () Class Body Style Globe Needle SDNR Flow Cont. Piston Control B/down Check Vertical 074X 094X 084X 04X N/A N/A Oblique 0X 096X 086X 06X N/A 06X Angle 075X 095X 085X 05X 05X N/A Vertical 074X 094X 084X 04X N/A N/A 0 Oblique 0X 096X 086X 06X N/A 06X Angle 075X 095X 085X 05X 05X N/A Vertical 74X 94X 84X 4X N/A N/A 0 Oblique X 96X 86X 6X N/A 6X Angle 75X 95X 85X 5X 5X N/A () See sections C, D & E on page 9. Flow Control STANDARD DESIGN SPECIFICATION/CODES SDNR (StopCheck) STANDARD FEATURE American European Equivalent Valve Design ASME B6.4 BS EN 56 Socketweld ASME B6. BS EN 0 Buttweld ASME B6.5 BS EN 67 Thread NPT ASME B.0. NONE Flange ASME B6.5 BS EN 759 Marking MSSSP5 BS EN 9 Pressure testing ASME B6.4 & MSS SP6 BS EN 66 Welding ASME IX BS EN 87 EndtoEnd ASME B6.0 BS EN 98 Valves comply to European Pressure Equipment Directive 97//EC. For Sour Service NACE valves see page. OPTIONAL FEATURES Limit Switch For open and/or shut indication. NonRotating Stem With needle roller bearings. Bare Shaft For motor operation. Liveloading Locking Device Plus Indicator For security and visual position monitoring. Liveloading For constant packing load. 6 Full Penetration Cap For elimination of bottom plug thread.

7 BONNETLESS GLOBE VALVES VERTICAL PATTERN ASME CLASSES 0, " (5 mm) SOCKETWELD/NPT, BUTTWELD PREP, BUTTWELD PUP & FLANGED G F E A B C D Socketweld NPT Buttweld PREP Buttweld PUP Flanged DIMENSIONS VERTICAL EndtoEnd FacetoFace SIZE Seat Center Center Center HW Weight lb/kg Socketweld Buttweld Flange totop totop in/mm Bore Bottom NPT PREP PUP RF RTJ Open Shut Diameter SW/NPT A B C D E F G BW PREP BW PUP Flange Class Class Class

8 BONNETLESS GLOBE VALVES OBLIQUE PATTERN ASME CLASSES 0, " (5 mm) SOCKETWELD/NPT, BUTTWELD PREP, BUTTWELD PUP & FLANGED H F G E A B C D Socketweld NPT Buttweld PREP Buttweld PUP Flanged DIMENSIONS OBLIQUE EndtoEnd FacetoFace SIZE Seat Center Center Center Center HW Weight lb/kg Socketweld Buttweld Flange totop totop toin/mm Bottom NPT PREP PUP RF RTJ Open Shut End Diameter SW/NPT A B C D E F G H BW PREP BW PUP Flange Class Class Class

9 BONNETLESS GLOBE VALVES ANGLE PATTERN ASME CLASSES 0, " (5 mm) SOCKETWELD/NPT, BUTTWELD PREP, BUTTWELD PUP & FLANGED H G B D E F A C E F Socketweld NPT Buttweld PREP Buttweld PUP Flanged DIMENSIONS ANGLE CentertoEnd CentertoFace SIZE Seat Center Center HW Weight lb/kg Socketweld Buttweld Flange totop totop in/mm Bore NPT PREP PUP RF RTJ Open Shut Diameter SW/NPT A B C D E F G H BW PREP BW PUP Flange Class Class Class

10 BONNETLESS GLOBE VALVES PISTON CHECK ASME CLASSES 0, " (5 mm) SOCKETWELD/NPT, BUTTWELD PREP, BUTTWELD PUP & FLANGED G F E A B C D Socketweld NPT Buttweld PREP Buttweld PUP Flanged DIMENSIONS OBLIQUE CHECK EndtoEnd FacetoFace SIZE Seat Center Center Center Weight lb/kg Socketweld Buttweld Flange to toin/mm NPT PREP PUP RF RTJ Top End SW/NPT Bore Bottom A B C D E F G BW PREP BW PUP Flange Class Class Class

11 BONNETLESS GLOBE VALVES CONTINUOUS BLOWDOWN ANGLE PATTERN ASME CLASSES 0, " (5 mm) SOCKETWELD/NPT, BUTTWELD PREP, BUTTWELD PUP & FLANGED H G B D E F A C E Socketweld NPT Buttweld PREP Buttweld PUP Flanged F DIMENSIONS CONTINUOUS BLOWDOWN CentertoEnd CentertoFace SIZE Seat Center Center HW Weight lb/kg Socketweld Buttweld Flange totop totop in/mm Bore NPT PREP PUP RF RTJ Open Shut Diameter SW/NPT A B C D E F G H BW PREP BW PUP Flange Class () () () () () () Class 0 () () () () () () Class 0 () , () () () () () () Seat Bore as per order.

12 ENGINEERING DATA CONTINUOUS BLOWDOWN CHARTS WIDE OPEN CAPACITIES VERSUS BOILER PRESSURE HANDWHEEL TURNS VERSUS % OF WIDE OPEN CAPACITIES Blowdown Capacity lb/hr CONNECTION Pressure psi 7/6 /8 5/6 /4 /6 /8 /6 Orifice Diameter Blowdown Capacity lb/hr Blowdown Capacity lb/hr Pressure psi / CONNECTION CONNECTION Pressure psi 7/8 /4 5/8 / /8 Orifice Diameter 7/8 /4 5/8 / Orifice Diameter Wide Open Capacity (%) Wide Open Capacity (%) VALVE Orifice Diameter /8, 7 /6 /4, 5 /6 /6 /8 /6 4 Handwheel Turns / and VALVE Orifice Diameter /4, 7 /8, 5/8 / /8 4 5 Handwheel Turns OPERATING TORQUE The primary function of the valve is to close the disc tightly onto the main seat against the ΔP (differential pressure) across the valve. Manually operated valves achieve this by converting handwheel rim force into stem torque, which in turn converts to an axial stem force via the stem thread. The axial force is thus applied to the disc but must be suffficient to oppose the ΔP acting on the seating orifice. Many variables affect the estimation of operating torque. These include: Stem thread form and diameter. Degree of thread lubrication. Stem diameter and surface finish in contact with the packing rings. Gland packing material, geometry and degree of compression. Seat/disc material, geometry and finish. Seat diameter. ΔP across the valve. The following graph shows typical torque values for Velan bonnetless valves plotted against ΔP based on the use of graphite gland packing material and Stellite to Stellite seating surfaces. Torque ft lbs Differential Pressure bar / /4 / Differential Pressure psi * Values shown are for rotating stem design. Please consult Velan Valves Ltd for guidance if other gland packing material is required. Please note that the values shown are for guidance only and must not be used for final choice of actuators as many other factors could influence selection. 0 5 Torque Nm

13 When selecting valves, it is common practice to compare Cv values for specific applications. The flow coefficient Cv expresses the rate of flow of water in US gallons per minute at 60 F with a pressure drop of psig. Cv Values* CALCULATION OF FLOW DATA FOR CALCULATION OF FLOW The metric equivalent of flow coefficient Cv is known as the flow factor Kv and expresses the rate of flow of water in cubic meters per hour at 0 C with a pressure drop of kg/cm ( bar). For conversion, Kv = Cv x Size Seat Globe/Stop Valve Flow Control Valve Needle Valve Stop Check Valve Check in Dia. Area mm (in) (in Oblique Vertical Angle Oblique Vertical Angle Oblique Vertical Angle Oblique Vertical Angle Valve ) * Cv values for the bonnetless valves shown below have been determined from actual flow tests. FOR LIQUIDS: () Q L = C Δ P V G L () Δ P =G L ( Q L ) C V WHERE: Q L = Flow in U.S. gallons per minute. FOR GASES: Δ P = (P P ) Pressure drop in psi G L = Specific gravity of liquid (water = at 60 F) () Q g = 60 C Δ P V G g T P + P (4) Δ P = P P G g T ( Q g ) 60C v WHERE: Q g = Volumetric flow of gas (SCFH) G g = Specific gravity of gas at standard conditions (air at atmosphere and 60 F = ) T = Absolute temperature of gas ( F +460) FOR STEAM: (5) W =. CV Δ P (P + P ) T S (6) Δ P = P P K WHERE: NOTE: K = ( T S ) W. C v W = Pounds per hour of steam Δ P = (P P ) Pressure drop in psi T S = Degree of superheat ( F) P = inlet pressure P = outlet pressure NOTE: For saturated steam T S = 0 For gas and steam, max. ΔP = P, and min. P = P, and P, P are absolute pressures (psia) SOUR SERVICE VALVES Velan can manufacture the complete range of valves shown in this catalogue in compliance with NACE standard MR075. The February 00 revision of NACE MR075 changed the scope to include not only sulphide stress cracking (SSC) but also stress corrosion cracking (SCC) and thus severely restricted the usage of some traditional valve materials. For example, stainless stems are limited to F (66 C) and 6 SS bodies to F (60 C) However, NACE MR0000 may be an acceptable substitute to MR075 for most users. The material specifications in MR00 closely parallels earlier versions of MR075 and is therefore the best choice unless expressly prohibited by user or customer specifications.

14 TANDEM UNITS Bonnetless valves can be combined into virtually any arrangement of Tandem Unit to suit customer needs. One valve can be offset at an angle to the second valve. Permutations are endless. Combination ends can be accommodated with ease e.g. Flanged inlet x Socketweld outlet or maybe Buttweld inlet x Threaded outlet. See the illustrations below for some typical examples. The valves can be used as Double Isolation units where critical sealing is required. THE DOUBLE ISOLATION PRINCIPAL: With the valves mounted in tandem, the upstream (Inlet) valve is the Master and downstream (Outlet) is the Sacrificial. Assuming both valves are already closed on double isolation with pressure on the inlet (Master), the subsequent open close sequence is: Last Opened First Closed Vertical x Vertical Vertical x Angle Master Sacrificial Closed Closed Open Closed Oblique x Oblique Oblique x Angle Start / Finish Open Open Open Closed Vertical x Oblique Angle x Oblique Closed Closed Oblique x Vertical Angle x Vertical 4 Open Master If the Sacrificial has a good seal, no flow will be apparent. Open Sacrificial The full flow is now controlled by this valve and it alone will be exposed to erosion. Close Sacrificial Again, any wear will take place on this valve as it alone controls the flow. 4 Close Master Reestablishing double isolation. 4

15 FLANGE DIMENSIONS t f Face Height t f E Diameter O R W P W Raised Face RAISED FACE DIMENSIONS MEET ASME B6.5 : 00 SPECIFICATIONS Outside Face Holes Size Class Diameter Thickness Dia. Face PCD Height Dia. No. in/mm O t f R W Ring Type Joint RING TYPE JOINT DIMENSIONS MEET ASME B6.5 : 00 SPECIFICATIONS Outside Face Holes Ring Groove Size Class Dia. Thickness Dia. PCD Pitch Depth Ring Dia. No. in/mm O t f K W P E No R R R R R R R R R R R R R R R R R R6 STANDARD PIPE DIMENSIONS MEET ASME B6.0 & 6.9 SPECIFICATIONS Schedule Size Outside (Std.) 80 (XS) 60 XXS in/mm Dia. Wall Thkns. Bore Wall Thkns. Bore Wall Thkns. Bore Wall Thkns. Bore * Dimensions meet ASME B6.0 & 6.9 specifications. 5

16 PRESSURE/TEMPERATURE TABLES PRESSURETEMPERATURE RATINGS STANDARD CLASS VALVES, FLANGED & BUTT WELD END FORGED ASTM MATERIAL SPECIFICATION (ASME B ) PSIG / F, CLASSES 0, BAR / C, CLASSES 0 A 05 : B6.4 Material Group. CLASS Shell test psi Seat test psi TEMP. F Standard Class Special Class () 0 to () () Permissible, but not recommended for prolonged usage above 800 F (45 C). () Special class ratings are not applicable to flanged ends. A 05 : B6.4 Material Group. CLASS Shell test bar Seat test bar TEMP. C Standard Class Special Class 9 to () A 8 F : B6.4 Material Group.0 CLASS Shell test psi Seat test psi TEMP. F Standard Class Special Class () 0 to () () () A 8 F : B6.4 Material Group.0 CLASS Shell test bar Seat test bar TEMP. C Standard Class Special Class () 9 to () () () Permissible, but not recommended for prolonged usage above 00 F (595 C). () Special class ratings are not applicable to flanged ends. A 8 F9 : B6.4 Material Group.5 CLASS Shell test psi Seat test psi TEMP. F Standard Class Special Class () 0 to A 8 F9 : B6.4 Material Group.5 CLASS Shell test bar Seat test bar TEMP. C Standard Class Special Class () 9 to () Special class ratings are not applicable to flanged ends. 6

17 PRESSURE/TEMPERATURE TABLES A 8 F04 : B Material Group. CLASS Shell test psi Seat test psi TEMP. F Standard Class Special Class () 0 to () () () () () () A 8 F04 : B Material Group. CLASS Shell test bar Seat test bar TEMP. C Standard Class Special Class () 9 to () () () () () () () Not to be used above 000 F ( 58 C) unless C% > () Special class ratings are not applicable to flanged ends. A 8 F6 : B Material Group. CLASS Shell test psi Seat test psi TEMP. F Standard Class Special Class () 0 to () () () () () A 8 F6 : B Material Group. CLASS Shell test bar Seat test bar TEMP. C Standard Class Special Class () 9 to () () () () () () () Not to be used above 000 F (58 C) unless C% > () Special class ratings are not applicable to flanged ends. A 8 F5 : B Material Group.8 CLASS Shell test psi Seat test psi TEMP. F Standard Class Special Class () 0 to A 8 F5 : B Material Group.8 CLASS Shell test bar Seat test bar TEMP. C Standard Class Special Class () 9 to () Not to be used above F (5 C). () Special class ratings are not applicable to flanged ends. 7

18 INSTALLATION/SERVICE RECOMMENDATIONS VALVE ORIENTATION Velan advises that valves may be installed in any orientation, but the preferred orientation is with stem vertically above the valve body. Any deviation from this is a compromise. Installation with valve stem below horizontal may result in debris collecting around the backseat and could migrate inside the packing chamber causing stem scoring and valve operating problems. When valves are fitted with actuators, Velan recommends the preferred stem orientation described above (stem vertically above the valve body) in order to minimise stem bending and seat alignment problems. If the end user has specific questions concerning orientation, they should contact Velan Valves Ltd for recommendations. Piston check valves are normally supplied with springs between the disc and cover to prevent chattering under low flow conditions and can be installed in either vertical or horizontal lines. Disc cracking pressure is approximately 5 psi (0.4 bar). If piston check valves are required to lift at lower differential pressures, they can be supplied without springs by special arrangement. In these cases, the valves are only suitable for installation in horizontal lines. GLOBE VALVES Globe valves are usually installed with the flow direction under the disc. This must be checked carefully to prevent incorrect installation a directional arrow is shown on the body. If throttling service is particularly severe, Velan recommends that the valve be installed in reverse so that flow enters above the disc and then through the seat orifice. This maintains the valve in a more stable condition, the amount of wear is minimised and there is less external noise. Valve operation also becomes easier because less torque is required to close the valve. However, it should be noted that the packing will remain under line pressure when the valve is closed. Regular style globe valves are suitable for moderate throttling applications. As a general rule, an adequately sized globe valve (i.e. with pipe velocity between 55 ft/sec for water and 0000 ft/sec for steam) should not be throttled down below 5% of its maximum full open Cv capacity approximately 0% of full stroke. Harsh throttling below 5% of full open Cv will require analysis by Velan to determine suitability under possible cavitation, flashing, noise and vibration. Velan continuous blowdown valves (see pg ) are designed specifically to handle harsh throttling services. Valves should be installed and welded with the disc in the fully closed position to prevent damage to the disc and seat. Ensuring the disc is in the fully closed position also prevents weld spatter from falling onto the seating surfaces. SOCKET WELD CONNECTIONS All socket weld dimensions conform to ASME B6.. When welding, it is recommended that a gap of approximately 0.06 (.6mm) is maintained between the pipe end and the socket bottom to prevent weld damage due to thermal expansion of the free end of the pipe. Refer to B6. for further guidance. Socket bores are protected against damage by the use of suitable protectors which must be removed prior to installation. SCREWED CONNECTIONS Standard ends conform to ASME B.0. (NPT female) and are protected against damage by the use of suitable protectors which must be removed prior to installation. BUTT WELD CONNECTIONS Standard butt weld dimensions conform to ASME B6.5 and are supplied with weld profiles in accordance with figure a of that standard. For pipe thicknesses < = 0.5 (mm) it is usual to supply the weld profile as plain end without a bevel. See ASME B6.5 for further guidance. Weld profiles are protected against damage by the use of suitable protectors which must be removed prior to installation. PISTON CHECK VALVES Check valves must be installed with the correct flow direction. This must be checked carefully before installation. Installing the valve in the opposite direction of flow will prevent operation. FLANGES CONNECTIONS Standard flanged ends conform to ASME B6.5 appropriate to the class rating. Raised faces and bores are protected against damage by the use of suitable protectors which must be removed prior to installation. All check valves should be installed at least ten pipe diameters downstream of pumps, elbows, fittings or other equipment. 8

19 HOW TO ORDER The figure numbers shown on this key are designed to cover essential features of Velan valves. Please use figure numbers to ensure prompt and accurate processing of your order. A detailed description must accompany any special orders. TYPE OF CONNECTION SIZE OF CONNECTION PRESSURE RATING TYPE BODY/BONNET STYLE BODY MATERIAL TRIM A B C D E F G W X 0 T S Example: Socketweld,, 0 class, stop/globe, vertical pattern, forged A05 with standard Stellite trim. A TYPE OF CONNECTION A Buttweld R Flanged ANSI B6.5 Ring Type ()(6) B Buttweld: direct profile ()(7) S Screwed NPT Female (5) C Combination Ends U Undrilled flanges D Flanged DIN (0) X Special to Order F Flanged ANSI B6.5 RF () W Socketweld (4) G Flanged Small Tongue & Groove X Welded Stubs, Socketweld (0) B SIZE OF CONNECTION Customers have the choice of specifying valve size as part of the valve figure number (B) using the numbers below, or indicating valve size separately. EXAMPLES: W05074X0TS (valve size is part of figure number) W074X0TS (valve size is shown separately) C D 0 4 (8 mm) 0 (5 mm) 05 (5 mm) 07 ( mm) 0 8 (0 mm) 04 4 (0 mm) 06 4 ( mm) 08 ( mm) PRESSURE RATING 0 or API 800 (8) D BS0 Table D H BS0 Table H M PN 64 R BS0 Table R E BS0 Table E J BS0 Table J N PN 00 S BS0 Table S F BS0 Table F K BS0 Table K P PN 60 T BS0 Table T G PN 6 L PN Q PN U PN 0 VALVE TYPE 0 Flow control 04 Strainer 09 Needle 0 Ball check 07 Globe Stop 0 Continuous Blowdown () 0 Piston check 08 Stop check (SDNR) 99 Special Footnotes: () Valves are designed in accordance with ASME B6.4 and tested to API598 / MSS SP6 unless requested otherwise. () Flange facings for class rated valves are supplied in accordance with ASME B6.5 with either raised face (A code F) or ring type joint (A code R) () Buttweld profiles in accordance with ASME B6.5. (4) Socket weld connections in accordance with ASME B6. (5) NPT thread in accordance with ASME.0. (6) EndtoEnd and FacetoFace dimensions in accordance with ASME B6.0. (7) EndtoEnd dimension is Velan standard. (8) API class 800 applies only to Socket weld or screwed ends. (9) NACE service valves are supplied with materials conforming to either MR edition or MR000. Please contact plant when NACE valves are required to be compliant to MR (0) FacetoFace or EndtoEnd dimensions to order. () Available only in Angle pattern with flow over disc i.e. inlet from side and outlet in line with stem axis. () Material code 0 F6H/F6 (CF8M) has a minimum carbon content of 0.04 and is to be used if temperatures are over 000 F (58 C). Material code forged F6, is not suitable for temperatures over 000 F (58 C) as it is dual certified (F6/F6L). E F BODY/BONNET STYLE 4 Vertical Pattern 6 Oblique YPattern 5 Angle Pattern X Bonnetless (Rotating Stem, Rising Handwheel) BODY MATERIAL 0 A05 0 F6H/F6 () F5 06 F F6 () 4 F9 Other materials supplied by special arrangement. G TRIM (standard trims) CODE TYPE DISC SURFACE SEAT SURFACE STEM API NO. MS Standard Stellite 6 Stellite 6 SS Type 6 TS Standard Stellite 6 Stellite 6 SS Type (% CR) 5 NE NACE (9) SS Type (% CR) Stellite 6 Stellite 6 HRC max. 5 NG NACE (9) Stellite 6 (4) Stellite 6 (4) SS Type 6 AA Special To Order To Order To Order 9

20 low emissions easy maintenance long, reliable service VELPS VELBG VELSFV VELBS VELCRYO VELCSV VELAPI60 VELKGV VELPQCV VELNCP VELBF VELMS VELPBV VELCBV VELBV6D VELBV VELVTP VELGPBV VELADCV VELST Printed in Canada VELXBG006