18061659285
Fully Welded Trunnion Ball Valve with Bypass and Drain
Product Parameters
Valve Type |
Fully Welded Trunnion Mounted Ball Valve with Bypass & Drain 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 |
End Connection |
Welded Ends with Pipe Extension (Seamless Pipe) |
Operation |
Worm Gear Operated (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) |
Coating |
Heavy-Duty Epoxy Coating, FBE or other coatings available upon request |
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
Eliminates flange joints and external leakage points, ideal for buried pipelines.
Trunnion Mounted Ball
Reduces operating torque and ensures stable sealing under high pressure.
Integrated Bypass System
Balances pressure across the valve for safer and smoother operation.
Built-in Drain Valve
Allows safe cavity pressure relief and pipeline drainage during maintenance.
Heavy-Duty Anti-Corrosion Coating
Epoxy coating provides long-term protection in underground and outdoor environments.
ISO 5211 Mounting Pad
Standardized mounting interface enables easy actuator installation and future automation.
Product Details
The fully welded trunnion mounted ball valve with bypass is designed for long-distance pipeline systems where high reliability and low maintenance are essential. Its fully welded body construction eliminates potential external leakage paths, making it especially suitable for buried and underground installations.
Equipped with an integrated bypass line, the valve enables pressure equalization before operation, effectively reducing operating torque and extending seat service life. A dedicated drain valve allows safe cavity pressure release and pipeline drainage during maintenance, significantly improving operational safety.
This valve is supplied with a worm gear operator for smooth and controlled operation in high-pressure, large-diameter pipelines. It is widely used in gas transmission, water supply, district heating, and industrial pipeline networks.
Decades of Expertise
Tailored Solutions
Rigorous Quality Control
Proven Reliability
How We Ensure Quality & Reliability?
Quality is built into every stage - from raw material to final testing.
CE Certificate
ISO9001 Certificate
Certificate for Credit for Quality Service
Certificate of Observing Contract and Keeping Promise
Trademark Certificate