Shoulong Valve
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Enables reliable operation in underground or buried installations, even if stem seals fail.
Fully welded one-piece construction minimizes leakage points for long-term medium-pressure pipeline reliability.
Trunnion-mounted design absorbs line pressure, ensuring smooth valve operation at full rated pressure.
Double block-and-bleed (DBB) design allows controlled venting and secure pipeline isolation during maintenance or emergencies.
Anti-blowout stem, anti-static device, and fire-safe seats protect against critical and flammable conditions.
Body, seat, and sealing materials can be tailored for various media, temperatures, and project requirements.
SLVCN Class 300 Fully Welded Trunnion-Mounted DBB Ball Valve with Extended Stem provides reliable flow control for underground, buried, and harsh pipeline applications. Its fully welded one-piece body eliminates flange leakage points for long-term operation in medium-pressure pipelines.
The trunnion-mounted DBB design ensures stable operation, safe isolation, and easy venting during maintenance or emergencies. The extended stem allows buried installation operation even if stem seals fail.
Safety features include fire-safe spring-loaded seats, anti-static protection, and an anti-blowout stem. Body, seat, and sealing materials can be customized - including Carbon Steel, Stainless Steel, Alloy Steel, PEEK, and PCTFE - to meet specific temperatures, pressures, and media 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 |
Dimensions: Class 300 - Full Port
| Size NPS/DN | Bore | Face to Face | Weight |
|---|---|---|---|
| 2" / 50 | 1.94 | 8.5 | 60 |
| 3" / 80 | 2.94 | 11.13 | 132 |
| 4" / 100 | 3.94 | 12 | 179 |
| 6" / 150 | 5.94 | 15.88 | 397 |
Weight and dimensions for larger valve sizes up to 64" available on request.
