18061659285
Class 600 Fully Welded Trunnion-Mounted DBB Ball Valve
Product Parameters
| Size | 2" to 64" (DN50–DN1600) |
| Pressure | Class 600 (Optional Class 150/300/900/1500) |
| Operating Temperature | -46℃ to 450℃ (Material Dependent) |
| Ball Type | Trunnion-mounted, Fully Welded One-Piece Body |
| Sealing Design | Double Block and Bleed (DBB) with optional emergency sealant injection |
| End Connection | Butt Weld (BW) / Socket Weld (SW) |
| Operation Types | Manual Handle, Worm Gear, Electric, Pneumatic |
| Mounting | ISO 5211 Direct Mounting Available |
| Body Materials | Carbon Steel, Low Temperature Steel, Stainless Steel, Duplex/Alloy Steel (ASTM A182, A694, Inconel 625, Incoloy 800, Hastelloy C, etc.) |
| Seat Materials | PEEK, PCTFE (KEL-F), Devlon V-API, Hard-Seated Options |
| Design & Manufacturing Standards | API 6D, ASME B16.34, BS 5351, MESC SPET 7/200 |
| Application Field | Oil & Gas, Chemical & Petrochemical, Power Generation, Offshore & Deepwater, Aerospace & Military, Water Treatment & Supply, Metallurgical & Mining |
| Brand | SLVCN |
Key Features
Zero External Leakage
Fully welded one-piece body eliminates external leakage paths, ideal for subsea, underground, and harsh pipeline environments.
Stable High-Pressure Performance
Trunnion-mounted ball design ensures reliable operation under high-pressure conditions and enhances load-bearing stability.
Maximum Pipeline Safety
Double Block-and-Bleed (DBB) design provides secure isolation, safe maintenance, and enhanced operational safety.
Fail-Safe Stem with Anti-Static Protection
In critical and flammable applications, the anti-blowout stem with single or double piston effect (SPE/DPE) and built-in anti-static device ensures maximum safety.
Sour Service Capability
NACE MR0175-compliant materials guarantee reliable performance in sour, corrosive, and challenging service conditions.
Durable Sealing, Fire-Safe & Long-Term Reliability
Fire-safe design and advanced sealing technology ensure long-term performance and emergency sealing capability; available in full and reduced bore for optimized flow, supporting manual, electric, and pneumatic operation.
Product Details
SLVCN Class 600 Fully Welded Trunnion-Mounted DBB Ball Valve is designed for high-pressure and high-flow pipeline systems, including pumping and compression stations, subsea, underground, and other harsh service applications. Featuring a fully welded one-piece body, the valve eliminates external leakage paths and delivers reliable, long-term performance in critical operating conditions.
Engineered with a trunnion-mounted ball and Double Block-and-Bleed (DBB) design, the valve ensures stable operation, secure isolation, and safe maintenance. It is well suited for demanding applications in oil & gas, chemical & petrochemical, power generation, and other industrial sectors. The design and manufacturing follow API 6D requirements, incorporating fire-safe, anti-static, and fail-safe anti-blowout stem features to enhance operational safety in critical environments.
The valve material, nominal size, seat, and sealing materials can be customized to meet specific working conditions and project requirements.
| 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 |
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 |
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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