18061659285
Fully Welded Buried Trunnion Ball Valve with Extended Stem
Product Parameters
Valve Type |
Fully Welded Trunnion Ball Valve (Buried Type) |
Connection Size |
2" – 48" (DN50 – DN1200, larger sizes available upon request) |
Pressure Rating |
Class 150 / 300 / 600 / 900 / 1500 / 2500 |
Installation |
Underground / Buried Service |
Body Design |
Fully Welded Construction |
Ball Design |
Trunnion Mounted Ball |
Stem Design |
Extended Stem for Above-Ground Operation |
End Connection |
Welded Ends with Pipe Extension (Seamless Pipe) |
Operation |
Manual Gear Operator (Optional Electric / Pneumatic Actuator) |
Temperature Range |
-29°C ~ +425°C (depending on body and seat material) |
Body Material |
ASTM A105N, A350 LF2, A182 F304 / F316, F51, F11, F22; other materials available upon request |
Seat Material |
PTFE, RPTFE, PPL, PEEK, TFM, PCTFE, Metal Seat |
Port Design |
Full Port / Reduced Port (optional) |
Design Standards |
Designed in accordance with API 6D, ASME B16.34 |
Fire-Safe Design |
Designed in accordance with API 607 / API 6FA (optional) |
Brand |
SLVCN |
Key Features
Fully Welded Body
No bolted or flanged joints — withstands soil and pipeline stress for long-term, maintenance-free operation.
Trunnion-Mounted Ball
Low torque operation with extended seat life, ideal for large-diameter, high-pressure pipelines.
Extended Stem Design
Stem reaches ground level, minimizing excavation and ensuring safe operation of underground valves.
Manual Gear Operator
Smooth and efficient torque transmission for easy opening and closing. Optional electric or pneumatic actuators available.
Pipe Extensions / Seamless Ends
Extended pipe ends ensure pipeline alignment, reduce welding stress, and simplify lifting, transport, and field installation.
Customizable Seat Materials
Choose PTFE, RPTFE, PPL, PEEK, TFM, PCTFE, or other materials to match media, temperature, and pressure requirements.
Product Details
The fully welded buried trunnion ball valve is designed for underground pipeline applications requiring long-term reliability and zero external leakage. Its fully welded body and trunnion-mounted ball structure ensure stable sealing performance and low operating torque, making it suitable for demanding pipeline systems.
The extended stem enables underground installation while allowing safe and convenient operation from above ground. Equipped with a manual gear operator, the valve provides smooth and controlled opening and closing, even for large-diameter pipelines.
This valve is widely used in oil and gas transmission, natural gas distribution, district heating, and other pipeline systems. Materials, pressure ratings, seat designs, welded end connections, and coating systems can be customized to meet specific project requirements.
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How We Ensure Quality & Reliability?
Quality is built into every stage - from raw material to final testing.
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