18061659285
Class 600 Fully Welded Trunnion-Mounted DBB Ball Valve with Pipe Extensions, Gear Operated
Product Parameters
| Size | 2" to 64" (DN50–DN1600) |
| Pressure | Class 600 (Optional Class 150/300/900/1500) |
| Operating Temp | -46℃ to 450℃ (Material Dependent) |
| Ball Type | Trunnion-mounted, fully welded one-piece body |
| Sealing | Double Block-and-Bleed (DBB) with optional emergency sealant injection |
| End Connection | Butt Weld / Socket Weld with pipe extensions |
| Operation | Gear-operated (manual), optional electric or pneumatic |
| Stem | Short stem (optional extended) |
| Mounting | ISO 5211 direct mounting |
| Body Materials | Carbon Steel, Low Temp Steel, Stainless Steel, Duplex/Alloy Steel |
| Seat Materials | PEEK, PCTFE, Devlon V-API, Hard-seated options |
| Standards | API 6D, ASME B16.34, BS 5351, MESC SPET 7/200 |
| Applications | Oil & Gas, Chemical & Petrochemical, Power Generation, Offshore & Deepwater, Aerospace & Military, Water Treatment & Supply, Metallurgical & Mining |
| Brand | SLVCN |
Key Features
Fully Welded Valve Body with Pipe Extensions
Seamless pipeline connection minimizes leak points, ensuring reliable long-term operation with reduced maintenance.
Double Block-and-Bleed (DBB) Configuration
Secure isolation and controlled cavity venting provide safe pressure relief in critical pipeline systems.
Trunnion-Mounted Ball Design
Maintains consistent sealing under high pressure and large diameters, reducing wear and extending valve life.
Gear-Operated Mechanism
Low-torque operation enables smooth and precise manual control, even at full rated pressure.
Safety Features for Critical Applications
Fire-safe seats, anti-static protection, and anti-blowout stem enhance safety in high-pressure and flammable environments.
Versatile Material Options
Customizable body, seat, and sealing materials allow adaptation to diverse media, temperatures, and project requirements.
Product Details
The SLVCN Class 600 fully welded trunnion-mounted DBB ball valve with pipe extensions is designed for high-performance flow control in critical pipelines. Its fully welded body ensures zero external leakage, while the Double Block-and-Bleed (DBB) design provides secure isolation and safe cavity pressure relief.
The trunnion-mounted ball maintains stable sealing under high pressure and large diameters. Gear operation reduces torque for smooth, reliable manual control. Short-stem design suits above-ground installations, with optional extended stems for buried service.
Customizable body, seat, and sealing materials - including Carbon Steel, Stainless Steel, Alloy Steel, PEEK, and PCTFE - allow adaptation to various temperatures, pressures, and media. Compliant with API 6D and ASME B16.34, it is ideal for oil & gas, chemical & petrochemical, power generation, offshore/onshore pipelines, and other critical applications where safety, reliability, and low maintenance are essential.
| 1 | Welding steel pipe | 10 | Seat | 19 | Seal Ring | 28 | Nut | 37 | Four Open Loop |
| 2 | Seamless steel tube | 11 | Seat | 20 | Extension Stem | 29 | Bolt | 38 | Sealing Ring |
| 3 | Right Body | 12 | Ball | 21 | Bearing | 30 | Packing | 39 | Thrust Washer |
| 4 | Spring | 13 | Trunnion Support | 22 | Extension Support | 31 | Thrust Washer | 40 | Stem Bearing |
| 5 | "O"-Ring | 14 | Worm-Gear | 23 | Pin | 32 | "O"-Ring | 41 | Stem |
| 6 | "O"-Ring | 15 | Key | 24 | Support Frame | 33 | Packing Box | 42 | Stem Bearing |
| 7 | Thrust Washer | 16 | Bolt | 25 | Key | 34 | Gasket | 43 | Body |
| 8 | Packing | 17 | "O"-Ring | 26 | Connection Plate | 35 | "O"-Ring | 44 | Thrust Bearing |
| 9 | Seat Retainer | 18 | "O"-Ring | 27 | Stud | 36 | Stem Bearing | 45 | Stem Bearing |
Parts List
Dimensions: Class 600 - Full Port
| NPS/DN | B1in/mm| | B2 in/mm | Model / Face to Face | D in/mm | D1 in/mm | Weight | |||
| FW RF in/mm | FW RTJ in/mm | FF BWE in/mm | FW BWE in/mm | Model FW lb/kg | |||||
| 2" | 1.94 | 1.94 | 11.5 | 11.63 | 11.5 | 11 | 6.5 | 6.5 | 79 |
| 50 | 49 | 49 | 292 | 295 | 292 | 279 | 166 | 166 | 36 |
| 3" | 2.94 | 2.94 | 14 | 14.13 | 14 | 12.5 | 8.5 | 8.5 | 154 |
| 80 | 74 | 74 | 356 | 359 | 356 | 318 | 216 | 216 | 70 |
| 4" | 3.94 | 3.94 | 17 | 17.13 | 17 | 14 | 10.9 | 10.9 | 254 |
| 100 | 100 | 100 | 432 | 435 | 432 | 356 | 276 | 276 | 115 |
| 6" | 5.94 | 5.94 | 22 | 22.13 | 22 | 18 | 14 | 14 | 501 |
| 150 | 150 | 150 | 559 | 562 | 559 | 457 | 356 | 356 | 227 |
| 8" | 7.94 | 7.94 | 26 | 26.13 | 26 | 21.5 | 16.6 | 16.6 | 827 |
Weight and dimensions for larger valve sizes up to 64" available on request
Dimensions: Class 600 - Reduced Port
| Size | Bore | Model / Face to Face | D in/mm | D1 in/mm | Weight | ||||
| NPS/DN | B1in/mm | B2 in/mm | GG, GW RF in/mm | GG, GW RTJ in/mm | GG BWE in/mm | GW BWE in/mm | Model GW lb/kg | ||
| 2"X 11/2" | 1.94 | 1.5 | 11.5 | 11.63 | 11.5 | 11 | 6.5 | 6.5 | 68 |
| 50X40 | 49 | 38 | 292 | 295 | 292 | 279 | 166 | 166 | 31 |
| 3"X2" | 2.94 | 1.94 | 14 | 14.13 | 14 | 12.5 | 8.3 | 8.3 | 110 |
| 80X50 | 74 | 49 | 356 | 359 | 356 | 318 | 211 | 211 | 50 |
| 4"X3" | 3.94 | 2.94 | 17 | 17.13 | 17 | 14 | 10.9 | 10.9 | 209 |
| 100X80 | 100 | 74 | 432 | 435 | 432 | 356 | 276 | 276 | 95 |
| 6"X4" | 5.94 | 3.94 | 22 | 22.13 | 22 | 18 | 14 | 14 | 386 |
| 150X100 | 150 | 100 | 559 | 562 | 559 | 457 | 356 | 356 | 175 |
| 8"X6" | 7.94 | 5.94 | 26 | 26,13 | 26 | 21.5 | 16.6 | 16.6 | 603 |
| 200X150 | 201 | 150 | 660 | 664 | 660 | 546 | 421 | 421 | 273 |
| 10"x8" | 9.94 | 7.94 | 31 | 31.13 | 31 | 23.5 | 20.1 | 20.1 | 1010 |
Weight and dimensions for larger valve sizes up to 64" available on request
If you want to obtain the complete size, please contact us
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