General Valve Twin Seal Brochure
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GENERAL VALVE Twin Seal Valves Provable zero-leakage, double block-and-bleed plug valve for oil and gas applications Table of Contents GENERAL VALVE TWIN SEAL VALVES Introduction................................................................................................... 2 The Evolution of Double Block-and-Bleed....................................................... 3 The Provable Zero-Leakage Double Block-and-Bleed Plug Valve with Retracting Seals...................................................................................... 4 How the Twin Seal Valve Works..................................................................... 6 Dimension Tables Model 200.............................................................................................. 7 Model 8800............................................................................................ 8 Model 800.............................................................................................. 9 Model 900 Full Bore Piggable.................................................................. 10 Model 400 Short Pattern......................................................................... 11 Seat and Reseat Seat and Reseat Valve.............................................................................. Model 1600 Reduced Bore...................................................................... Model 1500 Full Bore Piggable................................................................ Electric Actuators..................................................................................... Pneumatic Actuators................................................................................ Limit Switches.......................................................................................... Mechanical Extensions............................................................................. Direct Burial – Underground.................................................................... Pressure-Relief Systems............................................................................ Standard Materials of Construction.......................................................... 12 13 14 15 16 17 18 19 20 22 How to Order................................................................................................ 23 Services for Valves and Actuation................................................................... 24 Trademark Information.................................................................................. 25 1 GENERAL VALVE Twin Seal Valves Little Rock, Ark., USA Cameron is a leading provider of valve, valve automation, and measurement systems to the oil and gas industry. Our products are primarily used to control, direct, and measure the flow of oil and gas as it is moved from individual wellheads through flowlines, gathering lines, and transmission systems to refineries, petrochemical plants, and industrial centers for processing. Cameron provides a wide range of valves for use in natural gas, LNG, crude oil, and refined products transmission lines. The traditional CAMERON® fully welded ball valve product line has been combined with the GROVE®, RING-O®, TOM WHEATLEY®, ENTECH™, and TK® product lines. This broad offering has strengthened Cameron’s ability to serve as a single source for a wide scope of customer requirements. We also provide critical service valves for refinery, chemical, and petrochemical processing businesses and for associated storage terminal applications, particularly through the ORBIT® and GENERAL VALVE® lines. These brands are complimented by WKM® and TBV™ valve products. Cameron is the world’s leading manufacturer of high-integrity, positive shut-off, double blockand-bleed valves, which serve the pipeline, liquid bulk terminals, aviation fueling, refining, oil and gas production, and custody transfer markets for the petroleum and oil and gas industries. 2 THE EVOLUTION OF DOUBLE BLOCK-AND-BLEED Introduced in 1941, Cameron’s GENERAL VALVE® Twin Seal™ valves were the first to meet the rigid requirements of double block-and-bleed service more than 68 years ago. In the years since, subtle yet significant design refinements have been made to improve the valve’s performance. Superior design innovations, pride in manufacturing workmanship and selection of the best materials, support Cameron’s commitment to excellence and complete customer satisfaction. The Twin Seal valve is an alternative to the original twovalve system with just one double-seated bubble-tight valve. The upstream and downstream seals provide the same function as the two block valves. The body (serving as a spool piece) bleed verifies seal integrity. The double block-and-bleed system (as shown above) required the use of two valves and a spool piece. A bleed valve was used to drain the spool and verify seal integrity. Scored Seating Segments The Twin Seal valve’s completely retracted slip design minimizes leakage risk, reduces wear and maintenance and saves money. Seal abrasion is inherent in the design of most ball and gate valves. In most instances, the seats are ground or wedged against metal every time the valve cycles. Any foreign material lodged between the seats and ball or gate will score the seating surfaces. Once the seating segment is scored, product loss and contamination results. The Twin Seal valve avoids abrasion by having both independent slips completely retracted from the body bore during cycling. 3 THE PROVABLE ZERO-LEAKAGE DOUBLE BLOCK-AND-BLEED PLUG VALVE WITH RETRACTING SEALS Twin Seal Valve Advantages In meter block service, the differential pressure across each closed valve is very low. There is no assistance required from the line pressure to energize or compress floating seals to make them hold tight. Unless the body cavity in a ball valve is vented, the seals typically rely on springs to press them against the ball. The ball valve may be leaking until the user opens the bleed. Then, the reduction of the body pressure introduces a hydraulic force on the seat that may stop the leak. The user can form a false impression that the ball valve is holding tight, when in reality, it leaks. In contrast, the mechanical wedge-action of the Twin Seal plug compresses both the upstream and the downstream seals firmly against the valve body, needing no help from the line pressure. Twin Seal valves hold with consistent and provable zero-leakage. Meter Stations Flow meters require calibration to verify their accuracy. During meter calibration (proving), every closed valve in the meter system must seal drop tight. Even a small leak will cause errors in the meter calibration. The incorrect meter factor will persist until the next proving operation, and incorrect flow measurement can cost huge sums of money. Every Twin Seal valve in the meter station can be quickly and easily shown to be holding leak-tight. That means correct calibration every time. 4 Contamination is avoided in multi-product manifolds. Multi-Product Manifolds The Twin Seal positive shut-off, double block-and-bleed valve was developed for multiproduct fuel manifolds. Busy manifolds must be operated frequently, switching from product to product, often with power actuators and sometimes without supervision. Valves that can be trusted to seal drop tight every time will prevent the expensive consequences of contaminated fuel. Liquid fuels that move through pipeline manifolds are reliably segregated by provable, zero-leakage, Twin Seal valves. Every Twin Seal valve in the manifold has assured double block-and-bleed shutoff that proves total isolation of each product. By using Twin Seal valves, gasoline, diesel, kerosene, jet fuel, heating oil and LPG, as well as crude oil and natural gas, are protected from contamination. Tank Storage Isolation Loading/Unloading Fuel in storage tanks is exposed to the risk of contamination and loss of volume unless the tank isolation valves can be checked for zero-leakage. Tankside valves are operated frequently, but ensuring tank integrity without Twin Seal valves can be troublesome and expensive. Using line blinds (or skillet plates) for segregation involves a long, costly and perhaps hazardous operation of draindown, lockout and tagout. Traditional gate valve double block-and-bleed may produce loss of fuel from the open bleed. Twin Seal valves offer simple, provable, tank-side isolation, ensuring valve integrity. Fuel loading/unloading may require hundreds of open/ closed strokes of the connection valves every day. The valves typically operate against full pump pressure on every stroke, and they must close without leakage. Hydrant Isolation Fuel hydrants at busy airports must be pressure tested regularly to check the integrity of the pipes, flanges and gaskets. But, the only time this inspection can be performed is in the few hours each night when the airport is closed. On some occasions, sections of the hydrant must be isolated for extension, modification or repair. Or, it may become necessary to isolate section by section to find the location of a leak. Generally speaking, airports don’t have the time to drain fuel from the lines or to swing line blinds for traditional line block, but the entire hydrant must be isolated and pressurized to prove that it is safe. Safety and environmental concerns demand that the fuel is absolutely and totally contained within the pipe, yet the valves must operate quickly and easily. Twin Seal valves have two resilient seals that fully retract from their seated position without any seal rubbing, even at full differential pressure, reducing the effort required to operate the valve and making it slam-proof. Fuel Loading Hazards are Reduced Countless loading facilities depend on Twin Seal valves for safe, reliable, zero-leakage shutoff at rail, truck and ship load manifolds. From Alaska to Argentina, from Sidney to Sicily, from New York to New Zealand, fuel movement managers have discovered Twin Seal valves are the valves they can trust to deliver real dependability at their loading manifolds. Twin Seal valves are the recognized hydrant valves for airport service because: • They close quickly and easily • They require very little maintenance • They hold with zero-leakage • They hold a verifiable bubble-tight seal The hydrant pressure test can begin as soon as the valves are closed, since the Twin Seal valves ensure that the hydrant is isolated. 5 HOW THE TWIN SEAL VALVE WORKS 1. The internal design is very simple. Seals (A) are permanently bonded into the slips (B), which are mounted on a central plug. In the open position, the slip seals are completely out of the flow. B A 2. Turning the operator handwheel clockwise rotates the plug assembly 90 degrees to block flow. During rotation, clearance is maintained between the seal and the valve body, allowing free movement and avoiding abrasion. 3. When the operator is turned further clockwise, the tapered plug begins to lower, forcing the slips against the body, initiating the verifiable seal. Because the seals never drag in well-maintained valves, the valve requires less torque to cycle. 4. In the closed position, the slip seals are expanded, compressing the slip seals until metal-to-metal seating is affected. Because it is mechanical, the Twin Seal valve doesn’t rely on line pressure differential to help make it seal. It even seals in vacuum service. 6 Simple, In-Line Field Maintenance Keeps Costs Down A big advantage of the Twin Seal valve’s design is that it permits in-line servicing. By simply removing the valve bonnet or lower plate (after the line is depressurized and drained), all models may be repaired from top or bottom without removing the valve from the line. Cameron offers a slip exchange program. Contact us for details. WARNING: Do not attempt any repairs on Twin Seal valves unless you are certain the line pressure has been removed and the line contents have been drained from the valve, the line and the body cavity. Failure to follow these instructions could result in injury to personnel, or cause hazardous products to be vented from the valve. For complete instructions on installation and repair, request a copy of the Twin Seal valve installation manual from your local Cameron sales office. Dimensional Tables MODEL 200 Handwheel Operated Gear Operated D D B A A B C C G F E Dimensions in. (mm) Class ASME 150 Hand Operated ASME 300 Hand Operated ASME 600 Hand Operated ASME 150 Gear Operated ASME 300 Gear Operated ASME 600 Gear Operated Size G F E Maximum Overall Height Centerline of Valve to Centerline of Handwheel Centerline of Valve to Lowest Point Handwheel Diameter Flange Diameter Face -toFace Minimum Clearance to Remove Slip from Bottom Approx. Weight Flow Coefficient A B C D E F G lb (kg) CV in gal/ min 21-1/4 (540) 21-1/4 (540) 23-1/2 (597) 31-1/8 (790) 21-1/4 (540) 21-1/4 (540) 25-7/8 (657) 24-3/4 (629) 24-3/4 (629) 31-7/8 (810) 11-7/8 (302) 11-7/8 (302) 12-5/8 (321) 16-3/4 (426) 11-7/8 (302) 11-7/8 (302) 15 (381) 13-7/8 (353) 13-7/8 (353) 18 (457) 5 (127) 5 (127) 6-3/8 (162) 8-5/8 (219) 5 (127) 5 (127) 5-1/8 (130) 5-1/8 (130) 5-1/8 (130) 7-3/8 (187) 10 (254) 10 (254) 10 (254) 14 (356) 10 (254) 10 (254) 14 (356) 14 (356) 14 (356) 16 (406) 6 (152) 7-1/2 (191) 9 (229) 11 (279) 6-1/2 (165) 8-1/4 (210) 10 (254) 6-1/2 (165) 8-1/4 (210) 10-3/4 (273) 7 (178) 8 (203) 9 (229) 10-1/2 (266) 8-1/2 (216) 11-1/8 (283) 12 (305) 11-1/2 (292) 14 (356) 17 (432) 3 (76) 3 (76) 5 (127) 8 (203) 3 (76) 3 (76) 6 (152) 3 (76) 3 (76) 4 (102) 60 (27) 75 (34) 95 (43) 195 (88) 65 (29) 90 (41) 145 (66) 115 (52) 135 (61) 240 (109) Model Oper. 211 201 211 201 211 201 211 202 221 201 221 201 221 202 241 202 241 202 241 203 6 (150) 211 202G 31-7/8 (810) 18-1/4 (464) 8-5/8 (219) 10 (254) 11 (279) 10-1/2 (267) 8 (203) 200 (91) 1254 4 (100) 221 202G 26-5/8 (676) 16-1/2 (419) 5-1/8 (130) 10 (254) 10 (254) 12 (305) 6 (152) 155 (70) 620 241 202G 241 202G 241 203G 25-1/2 (648) 25-1/2 (648) 33-7/8 (861) 15-3/8 (391) 15-3/8 (391) 19-1/2 (495) 5-1/8 (130) 5-1/8 (130) 7-3/8 (187) 10 (254) 10 (254) 14 (356) 6-1/2 (165) 8-1/4 (210) 10-3/4 (273) 11-1/2 (292) 14 (356) 17 (432) 3 (76) 3 (76) 4 (102) 120 (54) 140 (64) 265 (120) 2 (50) 3 (80) 4 (100) 6 (150) 2 (50) 3 (80) 4 (100) 2 (50) 3 (80) 4 (100) 2 (50) 3 (80) 4 (100) 200 205 590 1254 210 220 620 290 300 850 290 300 850 7 MODEL 8800 Handwheel Operated Gear Operated D D B B A A C C G E F ASME 150 Hand Operated ASME 300 Hand Operated ASME 150 Gear Operated ASME 300 Gear Operated 8 G F Centerline Centerline Maximum of Valve to of Valve Handwheel Flange Overall Centerline to Diameter Diameter Height of Lowest Handwheel Point Dimensions in. (mm) Class E Face-toFace Minimum Clearance to Remove Slip from Bottom Approx. Weight Flow Coefficient Size Model Oper. A B C D E F G lb. (kg) CV in gal/min 8 (200) 8811 625H 36 (914) 23 (584) 9 (229) 20 (508) 13-1/2 (343) 11-1/2 (292) 12-1/2 (318) 385 (175) 2420 6 (150) 8821 625H 32-1/2 (826) 21 (533) 7-1/2 (191) 20 (508) 12-1/2 (318) 15-7/8 (403) 9 (229) 250 (113) 1770 8811 625G 8811 625G 8811 751G 8811 751G 8811 1261G 8811 1261G 8811 1261G 8811 1261G 8821 625G 8821 751G 39-3/4 (1010) 42 (1067) 53 (1346) 56-1/4 (1429) 64 (1626) 64-1/4 (1632) 68 (1727) 72-3/4 (1848) 36 (914) 43 (1092) 23 (584) 24 (610) 30-1/2 (775) 31-3/4 (806) 38 (965) 38 (965) 39-3/4 (1010) 41-1/2 (1054) 21-1/4 (540) 27 (686) 9-3/4 (248) 11 (279) 13 (330) 14-3/4 (375) 16-1/4 (413) 16-1/4 (413) 16-1/4 (413) 21-1/2 (546) 7-3/4 (197) 9 (229) 14 (356) 14 (356) 20 (508) 20 (508) 20 (508) 20 (508) 20 (508) 20 (508) 14 (356) 20 (508) 13-1/2 (343) 16 (406) 19 (483) 21 (533) 23-1/2 (597) 25 (635) 27-1/2 (699) 32 (813) 12-1/2 (318) 15 (381) 11-1/2 (292) 13 (330) 14 (356) 15 (381) 16 (406) 17 (432) 32 (813) 36 (914) 15-7/8 (403) 16-1/2 (419) 12-1/2 (318) 15 (381) 17 (432) 19 (483) 22 (559) 23 (584) 26 (660) 28 (711) 9 (229) 11 (279) 405 (184) 518 (235) 790 (358) 995 (451) 1340 (608) 1407 (638) 2860 (1297) 3830 (1737) 312 (142) 587 (266) 8 (200) 10 (250) 12 (300) 14 (350) 16 (400) 18 (450) 20 (500) 24 (600) 6 (150) 8 (200) 2420 3578 4000 5500 7000 7000 15,700 24,000 1770 3000 D MODEL 800 B A C F G Centerline Centerline of Valve Maximum of Valve to Handwheel Flange to Centerline Overall Diameter Diameter Lowest Height of Point Handwheel Dimensions in. (mm) Class ASME 150 Gear Operated ASME 300 Gear Operated ASME 600 Gear Operated ASME 900 Gear Operated ASME 1500 Gear Operated Size 28 (700) 30 (750) 36 (900) 10 (250) 12 (300) 14 (350) 16 (400) 18 (450) 20 (500) 24 (600) 28 (700) 30 (750) 6 (150) 8 (200) 10 (250) 12 (300) 14 (350) 16 (400) 20 (500) 24 (600) 2 (50) 3 (80) 4 (100) 6 (150) 8 (200) 10 (250) 2 (50) 3 (80) E Face-toFace Minimum Clearance to Remove Slip from Bottom Approx. Weight Flow Coefficient Oper. A B C D E F G lb (kg) CV in gal/min C811 1276G 1276G C811 1500G C821 751G C821 1261G C821 1261G CA821 1261-7G CA821 1261-7G CA821 1276G CA821 1276G CA821 1500G CA821 1500G C841 751G CA841 755G CB841 1261-7G CB841 1261-7G C841 1276G CA841 1276G C841 1500G C841 1500G C851 625G C851 625G C851 625G C851 755G C851 1261-7G C851 1276G C861 625G C861 625G 60-1/2 (1537) 60-1/2 (1537) 76 (1930) 29 (737) 36-1/2 (927) 34-1/2 (876) 36-1/2 (927) 40-1/2 (1029) 48 (1219) 50-1/2 (1283) 70 (1778) 71 (1803) 26 (660) 27 (686) 36-1/2 (927) 38 (965) 47 (1194) 47 (1194) 66 (1676) 72 (1829) 19 (483) 19 (483) 20 (508) 26 (660) 37 (940) 51-1/2 (1308) 19 (483) 19 (483) 32 (813) 32 (813) 34 (864) 12-1/2 (318) 16-1/2 (419) 14-1/2 (368) 14 (356) 20-1/2 (521) 24-1/2 (622) 25-1/2 (648) 28 (711) 32-1/2 (826) 9 (229) 11 (279) 16 (406) 17 (432) 19-1/2 (495) 19-1/2 (495) 23-1/2 (597) 26 (660) 7 (178) 8 (203) 10 (254) 11-1/2 (292) 16-1/2 (419) 21 (533) 7 (178) 8 (203) 32 (813) 32 (813) 32 (813) 20 (508) 20 (508) 20 (508) 20 (508) 20 (508) 32 (813) 32 (813) 32 (813) 32 (813) 20 (508) 20 (508) 20 (508) 20 (508) 32 (813) 32 (813) 32 (813) 32 (813) 14 (356) 14 (356) 14 (356) 20 (508) 20 (508) 32 (813) 14 (356) 14 (356) 36-1/2 (927) 38-3/4 (984) 46 (1168) 17-1/2 (445) 20-1/2 (521) 23 (584) 25-1/2 (648) 28 (711) 30-1/2 (775) 36 (914) 36-1/4 (921) 43 (1092) 14 (356) 16-1/2 (419) 20 (508) 22 (559) 23-3/4 (603) 27 (686) 32 (813) 37 (940) 8-1/2 (216) 9-1/2 (241) 11-1/2 (292) 15 (381) 18-1/2 (470) 21-1/2 (546) 8-1/2 (216) 10-1/2 (267) 60 (1524) 60 (1524) 78 (1981) 18 (457) 19-3/4 (502) 30 (762) 33 (838) 36 (914) 39 (991) 52 (1321) 65 (1651) 65 (1651) 22 (559) 26 (660) 31 (787) 33 (838) 35 (889) 39 (991) 47 (1194) 55 (1397) 14-1/2 (368) 15 (381) 18 (457) 24 (610) 29 (737) 33 (838) 14-1/2 (368) 18-1/2 (470) 30 (762) 30 (762) 30 (762) 13 (330) 16 (406) 15 (381) 19 (483) 13 (330) 14 (356) 17 (432) 12 (305) 28 (711) 10 (254) 12 (305) 8 (203) 10 (254) 10 (254) 14 (356) 14 (356) 12 (305) 3-1/2 (89) 4 (102) 6 (152) 7-1/2 (191) 10 (254) 10 (254) 3-1/2 (89) 4 (102) 13,000 (5897) 13,900 (6305) 20,600 (9344) 888 (403) 1414 (641) 1990 (903) 2662 (1207) 3550 (1610) 4155 (1885) 8150 (3697) 12,800 (5806) 15,300 (6940) 696 (316) 1102 (500) 1974 (895) 2532 (1148) 4100 (1860) 4300 (1950) 9500 (4309) 15,000 (680) 180 (82) 230 (127) 397 (180) 975 (442) 1440 (653) 3600 (1633) 180 (82) 280 (127) 31,000 CC811 108-1/2 (2756) 108-1/2 (2756) 121 (3073) 52 (1321) 63-1/2 (1613) 58-1/2 (1486) 61 (1549) 71 (1803) 88-1/2 (2248) 92 (2337) 114 (2896) 120 (3048) 45 (1143) 48 (1219) 62-1/2 (1588) 64-1/2 (1638) 82-1/2 (2096) 83 (2108) 106 (2692) 114 (2896) 33 (838) 34 (864) 37-1/2 (953) 47-1/2 (1207) 63-1/2 (1613) 88-1/2 (2248) 33 (838) 34 (864) Model 33,000 48,000 3540 4700 6000 9400 11,500 16,300 27,000 32,000 33,500 2265 3600 5100 9300 9500 11,000 16,500 27,000 160 250 650 2400 4200 5500 160 250 9 D MODEL 900 FULL BORE PIGGABLE A B C Dimensions in. (mm) Class ASME 150 ASME 300 ASME 600 10 Size 2 (50) 3 (80) 4 (100) 6 (150) 8 (200) 10 (250) 12 (300) 14 (350) 16 (400) 18 (450) 20 (500) 24 (600) 2 (50) 4 (100) 6 (150) 8 (200) 10 (250) 12 (300) 16 (400) 18 (450) 20 (500) 2 (50) 4 (100) 6 (150) 8 (200) 10 (250) 12 (300) 14 (350) 16 (400) 20 (500) Maximum Overall Height Model Centerline of Valve to Centerline of Handwheel Centerline of Valve to Lowest Point Handwheel Diameter E F G Flange Diameter Face-toFace Minimum Clearance to Remove Slip from Bottom Approx. Weight Oper. A B C D E F G lb (kg) C911 501 TS C911 501 TS C911 501 TS C911 625 TS C911 751 TS C911 751 TS A1911 1261 TS C911 1261 TS C911 1261 TS C911 1261.7 TS C911 1261.7 TS C911 1276 TS C921 501 TS C921 501 TS C921 625 TS C921 1261 TS CA921 1261 TS CA921 1261.7 TS C921 1276 TS C921 1276 TS CA921 1276 TS C941 625 TS C941 625 TS C941 751 TS C941 1261 TS C941 1261 TS C941 1276 TS C941 1500 TS C941 1500 TS C941 1500 TS 26 (660) 28 (711) 32 (813) 37 (940) 48 (1219) 52-1/2 (1334) 60 (1524) 61-1/2 (1562) 64 (1626) 78 (1981) 78-1/2 (1994) 108-1/2 (2756) 26 (660) 29-1/2 (749) 38 (965) 55 (1397) 58-1/2 (1486) 59 (1499) 83 (2108) 106-1/2 (2705) 89-1/2 (2273) 32-1/2 (826) 34 (864) 47 (1194) 63 (1600) 64-1/2 (1638) 83 (2108) 106 (2108) 106 (2692) 114 (2896) 15 (381) 16 (406) 17-1/2 (445) 21 (533) 27-1/2 (699) 29 (737) 35 (889) 36 (914) 37 (940) 44-1/2 (1130) 44-1/2 (1130) 60-1/2 (1537) 15 (381) 16-1/2 (419) 21 (533) 33 (838) 34-1/2 (876) 35 (889) 48 (1219) 67 (1702) 50-1/2 (1283) 19 (483) 19-1/2 (495) 27 (686) 37 (940) 38-1/2 (978) 47 (1194) 66 (1676) 66 (1676) 72 (1829) 6 (152) 7 (178) 7 (178) 9 (229) 10-1/2 (267) 13-1/2 (343) 15 (381) 15-1/2 (394) 17 (432) 23-1/2 (597) 24-1/2 (622) 32 (813) 6 (152) 7-1/2 (191) 10 (254) 12 (305) 14 (356) 14 (356) 19 (483) 23-1/2 (597) 23 (584) 6-1/2 (165) 8 (203) 10-1/2 (267) 16 (406) 16 (406) 19-1/2 (495) 26 (660) 24 (610) 29-1/2 (749) 10 (254) 10 (254) 10 (254) 14 (356) 20 (508) 20 (508) 20 (508) 20 (508) 20 (508) 20 (508) 20 (508) 32 (813) 10 (254) 10 (254) 14 (356) 20 (508) 20 (508) 20 (508) 32 (813) 32 (813) 32 (813) 14 (356) 14 (356) 20 (508) 20 (508) 20 (508) 32 (813) 32 (813) 32 (813) 32 (813) 6 (152) 7-1/2 (191) 9 (229) 11 (279) 13-1/2 (343) 16 (406) 19 (483) 21 (533) 23-1/2 (597) 25 (635) 27-1/2 (699) 32 (813) 6 (152) 10 (254) 12-1/2 (318) 15 (381) 17-1/2 (445) 20-1/2 (521) 25-1/2 (648) 28 (711) 30-1/2 (775) 6-1/2 (165) 10-3/4 (273) 14 (356) 16-1/2 (419) 20 (508) 22 (559) 27 (686) 27 (686) 32 (813) 10-1/2 (267) 13-1/2 (343) 17 (432) 21 (533) 25 (635) 31 (787) 36 (914) 34 (864) 35 (889) 48 (1219) 48 (1219) 60 (1524) 11-1/8 (283) 18 (457) 22 (559) 27 (686) 32-1/2 (826) 38 (965) 35 (889) 48 (1219) 48 (1219) 13 (330) 17 (432) 22 (559) 26 (660) 31 (787) 33 (838) 39 (991) 39 (991) 55 (1397) 5 (127) 5 (127) 5 (127) 7-1/2 (191) 9 (229) 11 (279) 14 (356) 15 (381) 17 (432) 18 (457) 17 (432) 30 (762) 5 (127) 6 (152) 8 (203) 9 (229) 12 (305) 16 (406) 16 (406) 15-1/2 (394) 19 (483) 6 (152) 6 (152) 8 (203) 10 (254) 12 (305) 10 (254) 15 (381) 16 (406) 20 (508) 216 (98) 320 (145) 401 (182) 522 (237) 861 (390) 1275 (578) 1670 (757) 2406 (1091) 3006 (1363) 5700 (2585) 6165 (2796) 12,800 (5806) 350 (159) 365 (165) 615 (279) 1255 (569) 1800 (816) 2500 (1134) 4000 (1814) 6400 (2903) 7000 (3175) 400 (181) 610 (277) 1100 (499) 2150 (975) 3100 (1406) 4200 (1905) 9500 (4309) 9500 (4309) 14,000 (6350) MODEL 400 SHORT PATTERN D A B C Centerline Centerline Maximum of Valve to of Valve Handwheel Flange Overall Centerline to Diameter Diameter Height of Lowest Handwheel Point Dimensions in. (mm) Class ASME 150 ASME 600 E F G Face-toFace Minimum Clearance to Remove Slip from Bottom Approx. Weight Flow Coefficient Size Model Oper. A B C D E F G lb (kg) CV in gal/min 18 (450) C411 1261 TS 67 (1702) 38-1/2 (978) 18 (457) 20 (508) 25 (635) 17 (432) 17 (432) 1488 (675) 7000 20 (500) C411 1261 TS 70 (1778) 40 (1016) 20 (508) 20 (508) 27-1/2 (699) 18 (457) 22 (559) 2658 (1206) 8500 24 (600) C411 1261 TS 74-1/2 (1892) 42-1/2 (1080) 22 (559) 20 (508) 32 (813) 20 (508) 28 (711) 3326 (1509) 11,250 18 (450) C441 1276 TS 82-1/2 (2096) 47 (1194) 19-1/2 (495) 32 (813) 29-1/4 (743) 39 (991) 10 (254) 4300 (1950) 10,200 11 SEAT AND RESEAT VALVE LETS YOU CHANGE SEALS IN MINUTES, WITHOUT DRAINING THE LINE Twin Seal Seat and Reseat Valves Reduce Line Draining, Line Flushing, Vacuum Trucks, and Product Losses. 1 - Valve in Closed Position Resilient seals form bubble-tight shutoff on upstream and downstream ports, and secondary metal-to-metal seats provide sufficient shutoff to meet fire safety requirements. The bonnet-mounted manual or automatic bleed valve verifies zero-leakage shutoff. 2 - Valve in Open Position, Product In-Line After seating segments are mechanically retracted from the ports, the plug is rotated 90 degrees and reseated into tapered body seats in the open position, forming a metal-to-metal seat. Line rouge (sediment) from pigging is prevented from settling in the body cavity. 3 - Valve Still in Open Position, Product In-Line The body bleed feature verifies there is no pressure in the body cavity, therefore, the line does not need to be drained. The bottom plate now can be removed safely and new seating segments can be slipped into position. Only commonly used hand tools are needed for the entire procedure. 12 Seat and Reseat MODEL 1600 REDUCED BORE D B A C G ASME 150 ASME 300 ASME 600 ASME 900 ASME 1500 Size 8 (200) 12 (300) 6 (150) 8 (200) 10 (250) 12 (300) 14 (350) 20 (500) 6 (150) 8 (200) 10 (250) 6 (150) 8 (200) 10 (250) 14 (350) 3 (80) 4 (100) 6 (150) E Centerline Maximum of Valve to Overall Height Centerline of Handwheel Dimensions in. (mm) Class F Model C1611 C1611 C1621 C1621 C1621 C1621 C1621 C1621 C1641 C1641 C1641 C1651 C1651 C1651 C1651 CA1661 CA1661 CA1661 Centerline of Valve to Lowest Point Handwheel Diameter Flange Diameter Face-to-Face Minimum Clearance to Remove Slip from Bottom A B C D E F G 47-1/2 (1207) 58-1/2 (1486) 37 (940) 47-1/2 (1207) 51 (1295) 58-1/2 (1486) 54-1/2 (1384) 95-1/2 (2426) 37 (940) 47 (1194) 64-1/2 (1638) 57-1/2 (1461) 27 (686) 36 (914) 22 (559) 27 (686) 29-1/2 (749) 36 (914) 32 (813) 57 (1448) 22 (559) 27-1/2 (699) 38 (965) 35-1/2 (902) 10-1/2 (267) 13 (330) 8 (203) 10-1/2 (267) 11-1/2 (292) 13 (330) 13 (330) 22-1/2 (572) 8-1/2 (216) 9-1/2 (241) 16-1/2 (419) 12 (305) 20 (508) 20 (508) 14 (356) 20 (508) 20 (508) 20 (508) 20 (508) 32 (813) 14 (356) 20 (508) 20 (508) 20 (508) 13-1/2 (343) 19 (483) 12-1/2 (318) 15 (381) 17-1/2 (445) 20-1/2 (521) 23 (584) 30-1/2 (775) 14 (356) 16-1/2 (419) 20 (508) 15 (381) 16-1/2 (419) 32-1/2 (826) 15-7/8 (403) 16-1/2 (419) 18 (457) 32-1/2 (826) 30 (762) 46 (1168) 22 (559) 26 (660) 31 (787) 24 (610) 7-1/2 (191) 11-1/2 (292) 5 (127) 7-1/2 (191) 12 (305) 11-1/2 (292) 12 (305) 12 (305) 5 (127) 7-1/2 (191) 11-1/2 (292) 5 (127) 71 (1803) 44-1/2 (1130) 17 (432) 20 (508) 18-1/2 (470) 29 (737) 5 (127) 87 (2210) 106 (2692) 46 (1168) 57-1/2 (1461) 56 (1422) 53-1/2 (1359) 70 (1778) 33-1/2 (851) 36 (914) 34 (864) 18 (457) 20 (508) 5-1/2 (140) 11-1/2 (292) 12-1/2 (318) 32 (813) 32 (8130) 14 (356) 20 (508) 20 (508) 21-1/2 (546) 29-1/2 (749) 10-1/2 (2670) 12-1/4 (311) 15-1/2 (394) 33 (838) 18-1/2 (470) 21-1/2 (546) 27-3/4 (705) 8 (203) 15 (381) 3-1/2 (89) 4-1/2 (114) 5 (127) 13 MODEL 1500 FULL BORE PIGGABLE D B A C G Dimensions in. (mm) Class ASME 150 ASME 300 ASME 600 ASME 900 ASME 1500 14 Size 18 (450) 20 (500) 24 (600) 6 (150) 10 (250) 18 (450) 24 (600) 6 (150) 8 (200) 10 (250) 12 (300) 16 (400) 6 (150) 8 (200) 10 (250) 12 (300) 6 (150) 8 (200) 10 (250) 12 (300) F Maximum Overall Height Model C1511 C1511 C1511 C1521 C1521 C1521 C1521 C1541 C1541 C1541 C1541 C1541 C1551 C1551 C1551 C1551 C1561 C1561 C1561 C1561 E Centerline of Valve to Centerline of Handwheel Centerline of Valve to Lowest Point Handwheel Diameter Flange Diameter Face-to-Face Minimum Clearance to Remove Slip from Bottom A B C D E F G 95-1/2 (2426) 105 (2667) 92 (2337) 48 (1219) 66-1/2 (1689) 106-1/2 (2705) 122-1/2 (3112) 49-1/2 (1257) 63 (1600) 64-1/2 (1638) 82 (2083) 107 (2718) 67-1/2 (1715) 72-1/2 (1842) 80 (2032) 108 (2743) 66 (1676) 84-1/2 (2146) 108-1/2 (2756) 108-1/2 (2756) 56 (1422) 65-1/2 (1664) 51-1/2 (1308) 28 (711) 44 (1118) 67 (1702) 77-1/2 (1969) 29 (737) 37 (940) 38-1/2 (978) 47 (1194) 66 (1676) 42-1/2 (1080) 45 (1143) 46 (1168) 70 (1778) 41 (1041) 50-1/2 (1283) 71-1/2 (1816) 71-1/2 (1816) 23-1/2 (597) 23-1/2 (597) 32 (813) 10 (254) 13 (330) 23-1/2 (597) 29 (737) 10-1/2 (267) 16 (406) 16 (406) 19 (483) 25 (635) 15 (381) 18 (457) 18 (457) 22-1/2 (572) 15 (381) 18 (457) 21-1/2 (546) 22 (559) 32 (813) 32 (813) 32 (813) 20 (508) 20 (508) 32 (813) 32 (813) 20 (508) 20 (508) 20 (508) 32 (813) 32 (813) 20 (508) 20 (508) 32 (813) 32 (813) 20 (508) 32 (813) 32 (813) 32 (813) 25 (635) 27-1/2 (699) 32 (813) 12-1/2 (318) 17-1/2 (445) 28 (711) 36 (914) 14 (356) 16-1/2 (419) 20 (508) 22 (559) 27 (686) 15 (381) 18-1/4 (464) 21-1/2 (546) 24 (610) 15-1/2 (394) 19 (483) 23 (584) 26-1/2 (673) 48 (1219) 48 (1219) 60 (1524) 15-7/8 (403) 32-1/2 (826) 48 (1219) 60 (1524) 22 (559) 26 (660) 31 (787) 33 (838) 44-1/2 (1130) 24 (610) 29 (737) 33 (838) 38 (965) 27-3/4 (705) 32-3/4 (832) 39 (991) 44-1/2 (1130) 16-1/2 (419) 16 (406) 30 (7620) 9-1/2 (241) 10-1/2 (267) 15-1/2 (394) 19 (483) 8 (203) 10 (254) 12 (305) 14 (356) 15 (381) 4 (102) 4-1/2 (114) 7 (178) 7-1/2 (191) 2-1/2 (64) 4-1/2 (114) 5 (127) 6-1/2 (165) ELECTRIC ACTUATORS Twin Seal valves accept most commercially available multi-turn electric motor operators. All automated Twin Seal valves require some form of body pressure relief because of thermal expansion (see pages 15 and 16) (MBV/DTR/ABV/etc.); otherwise, the valve can be difficult to open or may stick in the closed position. Choice of Motor Size The best selection of valve, gearing, and motor operator will depend on a number of factors, including: • Pipeline pressure • Operating speed • Environmental conditions • Handwheel accessibility • Available power Selecting the correct motor is a specialist’s task. Consult Cameron for free technical advice. Typical Mounting Configurations Orientation “A” (Upstream) Standard Orientation “E” (180 Degrees from Upstream) Orientation “C” (90 Degrees from Upstream) Orientation “G” (270 Degrees from Upstream) 15 PNEUMATIC ACTUATORS Cameron builds pneumatic actuators that can be fitted to its valves for reliable, economic power operation. When you specify a complete actuated valve package, the entire system is built, tested, and guaranteed. Only a few of the available power operation choices are shown on this page. For complete information, contact the Cameron office nearest you for alternative packages, or visit www.c-a-m.com/ValveAutomation. Spring-Close Piston Actuators Double-Acting Diaphragm Actuator with Reservoir Tank Spring-Close Diaphragm Actuator • For emergency shutdown (ESD) service • For continued operation in case of air supply failure • Air-to-open (spring-to-close) • • Piston-type grease snubber for speed control Air-to-open (spring-to-close) • Fitted with gas/oil speed control snubber system and two-way manual override handwheel • Valve can be mechanically locked closed or mechanically locked open • Limit switches can be fitted for remote indication of the valve position • Position indicator limit switches for local and remote indication of valve position • Fitted with a complete instrumentation package for: - Fail close - Fail in last position • Fitted with integral gas/oil speed control snubber system • Position indicator limit switches for local and remote indication of valve position • Fitted with a complete instrumentation package for: - Close on loss of air supply - Close on loss of signal - Open on command - Close on command • Pressure gauge is included for proof of zero-leakage shutoff 16 LIMIT SWITCHES Twin Seal valves can be fitted with switches or sensors to provide open/closed position indication of the valve. The switches or sensors are housed within a proprietary enclosure that meets the latest national and international electrical and explosion-proof standards. 17 MECHANICAL EXTENSIONS E B Gear Operator Extension-lateral Type “C” Gear Operator Extension-Closed Type “A” Hand Operator Extension-Closed Type “A” Hand Operator Extension-Open Type “B” The Twin Seal product line provides both vertical and lateral extensions or combinations of both. When ordering, always specify dimension B or E. Type A extension is suitable for underground burial. Type C extension should be supported if dimension E is larger than 36” (900 mm). Twin Seal valves, both hand operated and gear operated, can be supplied with chainwheels to operate elevated valves from below. The chainwheels have an extra-deep channel in which the chain runs to ensure that the chain will not climb off the track. The chain is supplied fully trimmed to eliminate barbs and is galvanized to withstand corrosive conditions. 18 When ordering chainwheels, provide the size and series of the valve and the length of chain required. DIRECT BURIAL – UNDERGROUND Patented Twin Seal extended bonnet valves greatly simplify maintenance in underground applications while providing dependable double block-and-bleed shutoff. Most underground valves are difficult to maintain and service, requiring excavation or a costly access pit. System designers often must compromise valve placement to overcome this maintenance problem. With Twin Seal extended bonnet valves, however, the designer has the freedom to put the valves in their ideal locations. Installation costs are reduced. Easy, Inexpensive Maintenance Twin Seal hydraulic extension systems are available for installations where standard Type A, B and C extensions are not practical. Since the self-contained hydraulic extension systems are manually/hydraulically operated, there are virtually no limitations on length and orientation. The hydraulic extension for gear operators essentially is a hydrostatic transmission. The pump is driven by a handwheel, and the pressure created is transmitted to the hydraulic motor mounted on the gear operator. This approach gives the system designer maximum flexibility since the only connections between the handwheel and valve are hydraulic tubes. There is no limitation on the number of corners turned between the valve and handwheel. Once extended bonnet valves have been installed, maintenance can be performed from above ground without a pit and without excavating. Unbolting and lifting the bonnet raises the valve plug and slips to ground level. Slip replacement is quick and easy, and downtime is minimal. Once the slips have been replaced, lower the assembly back into position and bolt down the bonnet. Hydraulic Extension System Installation Typical hydraulic extension system installation with two valves shows dual above-grade handwheel pump assemblies that are mounted on the same pedestal. 19 PRESSURE-RELIEF SYSTEMS To satisfy the requirements of API 6D, a pressure-relief device must be provided on all double block-and-bleed valves in liquid service. When the Twin Seal valve is seated and completely filled with liquid, even a slight increase in temperature due to the sun’s rays will result in a significant increase in the body cavity pressure resulting from thermal expansion. Therefore, all Twin Seal valves in liquid service must always be installed with a pressure-relief device. Manual Bleed (MBBV) Safety Bleed/DTR (Standard) Safety Block/DTR A manual body bleed valve is included on this Twin Seal valve. This bleed valve installed in the body cavity is only opened after the Twin Seal valve is closed. Seal effectiveness can be evaluated immediately. This bleed valve must be closed before the Twin Seal valve is reopened. The differential thermal relief system is arranged as shown. The integral relief valve, mounted in the upper relief/vent manifold, routes excess pressure to the upstream throat of the valve. The standard relief valve is set to open at 25 psi above upstream pressure. This system functions only when the valve is closed. A manual body bleed, also integrally mounted in the upper relief/vent manifold, is opened only to vent and to verify seal integrity. An isolation valve installed in the upstream throat tap also is included in this system. It must be left open to permit the relief system to relieve pressure upstream. The safety block/DTR functions exactly the same as the basic safety bleed. However, all working components are housed in a virtually indestructible compact carbon steel manifold. The benefits of this incident-control equipment are: fire safety, complete component access for maintenance purposes, all socket-welded joints, heavy wall pipe and incident control. 20 The automatic body bleed valve (ABBV) provides visual, positive assurance that the Twin Seal valve has sealed completely at each cycling operation and prevents thermal pressure buildups in the body cavity. An automatic bleed valve connected to the body cavity of the main valve is mechanically opened by the valve operator when the Twin Seal valve is seated. Seal integrity is indicated by viewing the discharge of the bleed valve. When the Twin Seal valve is opened, the bleed valve is automatically closed by the combination of line pressure and the spring in the bleed valve. Line Relieving Safety Bleed/DTR The line relieving/differential thermal relief (LR/DTR) provides all the same features as a basic DTR, with one additional function: the pressure protects the downstream piping. A relief valve (25 psid standard) is connected to the downstream throat tap via the lower tee. When the Twin Seal valve is seated and the downstream piping is sealed bubble-tight, the piping faces thermal overpressurization. The throat tap accesses this piping and directs any overpressurization upstream. An additional isolation valve is installed downstream for maintenance purposes. 21 STANDARD MATERIALS OF CONSTRUCTION Valve Series 200 8800 400/800/900/1500/1600 Body Cast Carbon Steel ASTM A216 WCC (1) Cast Carbon Steel ASTM A216 WCC (1) Cast Carbon Steel ASTM A216 WCB (1) Bonnet/Lower Plate Carbon Steel ASTM A216 WCC (2) Carbon Steel ASTM A36 (2) Carbon Steel ASTM A36 (2) Ductile Iron ASTM A395 Gr. 60-40-18 (3) for Valve Sizes 8” to 12” Larger Sizes ASTM A216 WCC (3) ASTM A564 Type 630 17-4 PH SS for Valve Sizes 8” to 12” Manganese Phosphate-Coated Ductile Iron ASTM A395 Gr. 60-40-18 ASTM A747 17-4 PH SST 6” to 10”, 12” to 24” ASTM A36 Plate (2) Ductile Iron ASTM A536 Gr. 80-55-06 (3) Plug Ductile Iron ASTM A536 Gr. 80-55-06 (3) Manganese Phosphate-Coated Ductile Iron ASTM A536 Gr. 65-45-12 Stem Slips Gland ASTM A216 WCC Cast Carbon Steel ASTM A216 WCB (3) Cast Carbon Steel ASTM A216 WCB (3) Manganese Phosphate-Coated Ductile Iron ASTM A395 Gr. 60-40-18 ASTM 487 Gland Packing Graphite Graphite Body Fire Seals Graphite Graphite Graphite O-rings and Slip Seals See Trim Selection See Trim Selection See Trim Selection ASTM A193 Gr. B7/2H ASTM A193 B7 ASTM A193 Gr. B7/2H Fasteners Note: Chrome-Plated Bore Or Industry Equivalent Materials subject to change without notice. (1) (2) (3) Graphite Electroless Nickel-Coated Proper seal selection includes a number of considerations such as media, pressure class, valve type, differential pressure, low temperature, high temperature, seal type, and more. See below for a selection of slip seal materials and a brief list of considerations. Fluoro Elastomers Slip Seal Materials For More Information Ask for GVMPS V Viton Our Standard Material Since 1958 3037 V9 Viton 90-Durometer Standard HIDP 3042 VFR Fiber-Reinforced Viton Optional HIDP 3033 ® VGF Viton GF Viton with Enhanced Chemical Resistance 3043 VGLT Viton GFLT Low-Temp. Viton GF 3044 VGLT9 Viton 90-Durometer GFLT HIDP Low-Temp. Viton GF 3059 Nitrile Elastomers Slip Seal Materials H Nitrile Our Original Standard Material 3048 H9 Nitrile 90-Durometer HIDP Nitrile 3049 LH Low-Temp. Nitrile Low-Temp. Nitrile 3050 H5 Modified Nitrile Reformulate Gasoline Seal Material 3053 Specialty Slip Seal Materials C Epichlorohydrin Good Low-Temp. Material 3054 3057 E Ethylenepropylene Ammonia, but not Hydrocarbon UHS Fluorosilicone Good High and Low Temp. 3032 RZL Rezilon HIDP RFG 3034 AFL AFLAS Amines, Exp. Decomp., Steam, 450° F (232 ºC) 3045 GVX VTR 6279 Ultra Chemical Resistant 3047 T Teflon® Good for Just About Anything 3041 All specifications and materials are subject to change without notice. 22 HOW TO ORDER X X Valve Bore Size – X X X X – X X X – X X X Model Operation Type Hand or Gear Specify Other Options and Trim in. 200 H – Hand Locking Devices mm 8800 G – Gear Switches – Limit/Indicator 800 MO – Motor Operated (Specify) Special Bleed Systems 900 MA – Motor Adapted (Specify) Special Trims 400 HGO – Hydraulic Gear Operator Special Seal Material 1600 Stem/Handwheel Extensions 1500 23 Services for Valves and Actuation WE BUILD IT. WE BACK IT. Global Network and Local Support Cameron is well-positioned to deliver total aftermarket support, quickly and efficiently, with unmatched OEM expertise. Our highly skilled engineers and technicians are available around the clock, seven days a week, to respond to customer queries, troubleshoot problems and offer reliable solutions. Easily Accessible Parts and Spare Valves • OEM spare valves, actuators and parts (including non-Cameron brands) • Handling, storage, packaging and delivery • Dedicated stocking program Comprehensive Services Portfolio • Parts and spare valves • Repair • Field services • Preventative maintenance • Equipment testing and diagnostics • Remanufacturing • Asset preservation • Customer property management • Training and recertification services • Warranty Customized Total Valve Care (TVC) Programs SM Customized asset management plans that optimize uptime, availability and dedicated services. • Engineering consultancy • Site management • Flange management • Startup and commissioning • Spare parts and asset management • Operational support USA • CANADA • LATIN AMERICA • EUROPE • RUSSIA • AFRICA • MIDDLE EAST • ASIA PACIFIC 24 Trademark Information GENERAL VALVE is a registered trademark of Cameron. This document contains references to registered trademarks or product designations, which are not owned by Cameron. Trademark Owner Celcon Hoechst Celanese Corporation Delrin E.I. DuPont De Nemours & Company Fluorel Minnesota Mining and Manufacturing Company Hastelloy Haynes International, Inc. Hycar Hydrocarbon Chemical and Rubber Company Hydrin Zeon Chemicals USA, Inc. Hypalon E.I. DuPont De Nemours & Company Inconel INCO Nickel Sales, Inc. Monel INCO Alloys International, Inc. Nordel E.I. DuPont De Nemours & Company Stellite Stoody Deloro Stellite, Inc. Teflon E.I. DuPont De Nemours & Company Viton E.I. DuPont De Nemours & Company 25 3250 Briarpark Drive, Suite 300 Houston, TX 77042 USA Tel 1 281 499 8511 For more information on GENERAL VALVE Twin Seal valves: www.c-a-m.com/GENERALVALVE GENERALVALVE@c-a-m.com ENVIRONME N XCELLEN LE CE TA TH SAFETY AL A HE ND CA HSE Policy Statement At Cameron, we are committed ethically, financially and personally to a working environment where no one gets hurt and nothing gets harmed. MERON ©2014 Cameron | CAMERON, GENERAL VALVE, GROVE, ORBIT, RING-O, TK, TOM WHEATLEY and WKM are registered trademarks of Cameron. CAMSERV, ENTECH, TBV, Twin Seal and TruSeal are trademarks of Cameron. Total Valve Care is a service mark of Cameron. All other brands are trademarks and registered trademarks of their respective companies. | SWP 1.5 M 12/14 AD01695V
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