BS 5351 ASME CLASS: SIZES: mm ( 1 /2 12 )

Transcription

1 BS 5351 ASME CLASS: SIZES: mm ( 1 /2 12 )

2 PROFILE Velan is the world's leading manufacturer of steel gate, globe, check, ball, knife and butterfly valves, mm ( ), ASME Classes , with 12 specialized manufacturing plants, including five in Canada, two in Korea and one each in the U.S., France, U.K., Portugal, and Taiwan. We have a total of 1,090 employees in North America, and 385 overseas. In 1985, we successfully introduced on the market an advanced, high performance line of competitive industrial ball valves, with patented resilient and metal seats in sizes mm ( ), and ASME pressure Classes This catalog covers a new line of split body ball valves mm ( ) to BS Velan ball valves have shown outstanding performance in critical applications in the chemical, oil, gas, petrochemical, pulp and paper, cryogenics and other industries. Unique machinery, equipment and systems, especially engineered to meet the specific requirements of advanced valve manufacturing technology, are used in all plants, allowing us to offer outstanding quality at highly competitive prices. CONTENTS Manufacturing Plants Velan Memory Seal Ball Valve Technology A Unique High Integrity Stem Seal Fire Safe Testing Design Features SB-150/300 Full Port mm ( ) Material Specifications, Ratings & Operating Torques Dimensions/Weights and Special Services How to Order Velan has Sales offices and distributors located worldwide. Visit the Velan website at for an updated contact list. NOTE: The material in this catalog is for general information. For specific performance data and proper material selection, consult your Velan representative. Although every attempt has been made to ensure that the information contained in this catalog is correct, Velan reserves the right to change designs, materials or specifications without notice.

3 VELAN MEMORY SEAL BALL VALVE TECHNOLOGY Velan concave-convex flexible, in-tension seats with induced sealing memory U. S. PATENT 3,384,341 D1 D2 BEFORE ASSEMBLY AFTER ASSEMBLY AREA IN COMPRESSION AREA IN-TENSION SEALING MEMORY The Velan sealing memory is induced into the seats during the assembly process. When the ball is inserted into the valve body during assembly, it partially flattens the seat, creating a tensile stress in the center of the seat. As a result, the seat core increases in diameter from D 1 to D 2 and like a stretched elastic band pushes against the ball. This ensures reliable sealing even at vacuum or low pressures. SEAT STRENGTH A seat in tension is stronger than a seat in compression because the tensile strength of PTFE in tension is 3600 psi versus only 1800 psi for PTFE in compression. Greater strength means less fatigue, superior sealing ability and longer cycle life. CAVITY PRESSURE RELIEF Memory seal seats are designed to relieve overpressure in the ball/body cavity. This capability is influenced by many variables including: fluid characteristics, variations in pressure, seat materials, seat compression, temperature and thermal cycles. Positive release of cavity overpressure to the upstream side is assured in bypassing the upstream seat through a drilled hole in the ball. This option is preferred in certain services such as liquid chlorine. Pressure relief when the valve is in the open position is always through the vent in the top of the ball adjacent to the stem connection. For further information on Cavity Relief contact Velan. LOWER TORQUES Velan in-tension seats produce more uniform torque because the seat deflects into the cavity behind it to accommodate slight differences in machining tolerances or the normal expansion of PTFE as temperature increases. PTFE expands approximately seven times as much as metal. SUMMARY OF MEMORY SEAL BENEFITS SEATS IN-TENSION - Greater strength - Less fatigue - Positive bi-directional shutoff - Compensate for temperature fluctuations - Uniform torque - High cycle life - Eliminate cold flow effects LARGER SEATING AREA - Superior sealing 2

4 A UNIQUE PACKING CHAMBER TESTED FOR 0 PPM EMISSIONS WITH A FULLY GUIDED STEM AND FLANGED PACKING GLAND 1. Fully-guided stem. Stem bearings in body and in the gland follower prevent wobbling and packing leakage due to side thrust on stem. 2. Two piece flanged gland design. To assure low fugitive emissions is standard. 3. Low emission stem seal. Precompressed (2000 psi) solid PTFE packing rings, a two-piece flanged gland and fine finish of stem and I.D. of packing chamber provides 0-20 ppm tightness for low emissions. 4. Stem thrust washer prevents galling, reduces operating torque and provides a secondary stem seal. 5. Blowout-proof. The internally-backseated stem provides blowoutproof safety. 6. Antistatic devices. Ball-to-stem and stem-to-body static grounding as standard to BS ALTERNATIVE STEM & PACKING CHAMBER DESIGNS TA-LUFT QUALIFICATION The certificate issued by RWTUV after testing Velan memory ball valves states We herewith certify the equivalence of shaft sealing for Velan ball valves with a fully guided shaft and live-loaded flanged packing gland to stem sealing with bellows seal and additional safety packing. This is based upon the requirements described in TA-Luft, Section LOW FUGITIVE EMISSIONS Based on extensive laboratory tests and field experience, Velan guarantees the customer that standard Velan ball valves will provide low emission service, on gaskets, and stem seals, under normal operating conditions, provided that gland and body-bonnet bolting is torqued to minimum values shown in the current Velan maintenance manuals. Maximum emissions on new valves: 20 ppm PTFE packing rings and 100 ppm graphite packing rings. Live-loaded flanged gland for long cycle life 3

5 VELAN BALL VALVE API 607 REVISION 4 An extensive range of Velan s resilient seated ball valves have been tested to and successfully passed BS6755 and API 607 Revision 4 test including our split-body, unibody, top-entry and end-entry designs. This now allows valve users to select Velan ball valves for a wide variety in installations with the latest in Fire Safe technology. The following shows the procedure and equipment used in the fire testing of the Velan ball valves in accordance with API 607 Revision 4. FIRE TEST IN PROGRESS 1 A valve was picked for testing at random. SEQUENCE OF EVENTS 2 Hydrotested to API 598 standard. 4

6 3 Valve mounted on the fire test rig in closed position with thermocouples located as required. 4 Valve is exposed to F for 30 minutes. 5 Simulated fire fighting. Rapid water quenching lowers the valve temperature to below 212 F. 6 Valve is cycled (open and closed) and pressure tested at 30 psig. Average leakage rate is calculated based on a 5-minute measurement period. 7 While the valve is exposed to the fire, the leakage is not allowed to exceed the rate specified in API 607 Revision 4 standards. 5

7 SB-150/300 SPLIT-BODY FULL PORT FLANGED MEMORY SEAL BALL VALVES CAST CARBON OR STAINLESS STEEL, mm (1/2 12") LOW FUGITIVE EMISSIONS WITH FLANGED GLAND FREE-FLOATING BALL TRUNNION BALL DESIGN FEATURES: Memory seal seats compensate automatically for wear and fluctuations of pressure and temperature. Multiple solid cup and cone type PTFE stem seal with flanged gland. Stem bearings reduce side thrust. Long cycle life. Low torques. Blowout-proof stem. Live-loaded thrust washer prevents galling and provides secondary stem seal. Fully enclosed spiral wound graphite filled stainless body gasket. Meets BS 5351, ASME B16.5 and B16.34, API 608 (3), 598 and 607 (4). Face-to-face dimensions meet ASME B16.10 long pattern. Trunnion-mounted ball on larger valves allows the ball to float and shut off the secondary metal seat in case of fire. Gear actuator standard on mm (8 12 ). Locking devices standard mm ( 1 /2 6 ). Live-loaded packing flange available. TA-Luft certified when supplied with PTFE live-loading packing. Cavity fillers available for mm ( 1 /2 10 ). Antistatic according to BS 5351 FLOATING BALL TRUNNION BALL mm mm ( 1 /2 8") ( 1 /2 6") mm mm (10 12") (8 12") APPLICATIONS: These rugged, versatile, high performance ball valves meet all requirements for oil and gas pipeline service and, when required, meet NACE specifications MR0175 for sour gas. The valves can handle a vast variety of fluids, slurries, semi-solids and almost any corrosive service in chemical, oil, petrochemical, gas, pulp, paper processing and other industries. Standard valves with RPTFE seats can handle steam service to 150 psig. Valves with carbon graphite filled PTFE seats are suitable for steam up to 250 psig. The valves comply with API 607 (4) and BS 6755 fire safe standards and are ideally suited for LP gas, petroleum and petrochemical processing. NOTE: (3) For latest revision compliance contact the factory. (4) Fire safe to API 607 Rev. 3, and BS 6755 for standard valves and to API 607 Rev. 4 with graphite packing due to two secondary metal-to-metal seals when resilient seats and seals evaporate in a fire: 1. Body seating edge for ball. 2. Stem shoulder-body. 6

8 SIZE mm in 15 1 / / / SB-150 FULL PORT A B C D E F SPLIT-BODY DIMENSIONS SB-300 FULL PORT A B C D E F (1) For valves 200 mm (8 ) and larger. dimensions to top of the stem. SOUR GAS SERVICE All Velan valves meet the material requirements of NACE MR0175 when required. NON-EXPOSED SERVICE: Velan ball valves are manufactured according to NACE where the bolting is not directly exposed to sour environments and is not to be buried, insulated, equipped with flange protectors, or otherwise denied direct atmospheric exposure shall be specified as shown in the chart below. EXPOSED SERVICE: Velan ball valves are manufactured according to NACE where components and bolting will be directly exposed to the sour environments or that will be buried, insulated, equipped with flange protectors, or otherwise denied direct atmospheric exposure shall be specified as shown in the chart below. STANDARD MATERIALS OF CONSTRUCTION FOR NACE SERVICE Valve SB-150/300 Size Body Cover Ball Stem (1) Gland Non-exposed Exposed Body Gland Belleville Washers / and Body Ring Service (3) Service Bolting (2) Bolting (2) Coil Springs mm CS Max. HRC 22 ( 1 /2 12 ) SS Max. HRC 22 (1) Valves with SS trim may have SS 316, 630 or XM-19 stems at manufacturer s option. VELAN SPECIAL SERVICES A 351-CF8M SS316 SS304 A I B7M B7M SS302 CHLORINE SERVICE Velan ball valves, factory ordered for chlorine service, are specially prepared to meet Chlorine Institute Pamphlet 6 requirements. 1. RELEASE OF CAVITY PRESSURE Positive release to the upstream side is assured in bypassing the upstream seat through a drilled hole in the ball. These valves must be installed in one direction only. An arrow indicates the directional use of the valve. Self-relieving seats are also available. 2. STANDARD MATERIALS BODY: A 105 or WCB carbon steel. SEATS: RPTFE. (2) Other bolting materials are available upon request. (3) Standard bolting as shown on the product pages CLEANING All parts are carefully cleaned and are black light tested to assure they are free of hydrocarbons, alcohol or moisture. Valves are dried after hydrotest and packed in plastic bags with a desiccant. TRIM: Monel or Hastelloy C as per customer selection Other materials are also available to customer specifications.

9 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* MODEL NUMBER OR CLASS PORT TYPE A B C D E BODY MATERIAL F TRIM MATERIAL G SEAT/SEAL MATERIAL H SPECIAL SERVICE OR DESIGN I SPECIAL PRODUCT CODE J A TYPE OF CONNECTION A Special F Flanged, B16.5 R Flanged, ring joint B SIZE OF CONNECTION* Customers have the choice of specifying valve size as part of the figure ( B ) using the numbers below, or indicating valve size separately. Examples: 2 F SSGA-E (valve size is shown separately) F SSGA-E (valve size is part of figure number) 03 15mm ( 1 /2") 08 50mm (2") mm (6") 99 Special 04 20mm ( 3 /4") 10 75mm (3") mm (8") 05 25mm (1") mm (4") mm (10") 07 40mm (1 1 /2") mm (5") mm (12") C MODEL NUMBER OR CLASS (1) D PORT 1 Full port 2 Special port E TYPE RESILIENT SEAT: 4 Split-body F BODY MATERIAL 01 Special 21 Hastelloy 02 A105, WCB 22 Titanium 13 Stainless steel, F316, CF8M 23 Alloy Monel 31 LCC F S S G A E EXAMPLE: For 4 flanged full port valve in carbon steel body with stainless steel trim and glass-filled PTFE seat for standard service. G CODE BALL STEM CODE BALL STEM AL Aluminum Aluminum IN Inconel Inconel AY Alloy 20 Alloy 20 MO Monel Monel BR Brass CR plated Brass PR SS 316-Cr plated SS 630 CB C 5 C 5 SB SS 304 SS 304 CC CS-CR plated CS plated SR SS 316 SS 630 CN CS-Ni plated SS 316 SS SS 316 SS 316 CP CS-CR plated SS 316 SV SS 317 SS 317 CT C 12 C 12 TI Titanium Titanium HC Hastelloy C Hastelloy C XX Special Special H SEAT MATERIAL C Carbon graphite G Glass-reinforced PTFE S PPS reinforced PTFE K PFA T Teflon PTFE E Copolymer L Delrin U UHMWPE PTFE/PFA P PEEK + 30% glass X Special F FEP R Graphite I SPECIAL SERVICE OR DESIGN (2) A Standard I NACE sour gas (3) X Special C Chlorine J Vacuum Z Fire tested to F Cavity filler N Nuclear API 607 Rev. 4 G Oxygen P Powders (graphite packing) H Cryogenic Q API 6D T Bonnet, double packing J TRIM MATERIAL SPECIAL PRODUCT CODE E BS 5351 (1) Actual valve pressure-temperature ratings depend on choice of materials. (2) If no special service or design is specified, use A for standard. (3) Exposed service. 9