Fully Welded Ball Valve

Fully-Welded Trunnion Ball Valve (Butt-Weld, Drain Port)

This fully-welded trunnion ball valve provides permanent, zero-leak isolation for oil, gas, and process pipelines. The one-piece pressure-containing body is fully welded, eliminating flange joints and external seal surfaces that can leak over time. Butt-weld ends are prepared to ASME B16.25 for direct welding into the pipeline, creating a fully integral joint with the surrounding pipe.

The trunnion-mounted ball design supports the sphere on fixed stems, reducing operating torque and extending seat life under high pressure. A bottom drain port allows cavity drainage and testing without dismantling the valve. The worm-gear operator with handwheel delivers reliable quarter-turn control and can be fitted with extension stems or electric actuators for remote operation.

The welded body is fabricated from high-strength steel plate, fully stress-relieved, and coated internally and externally for corrosion resistance. Standard features include cavity pressure relief, anti-static device, fire-safe seats, and live-loaded stem packing. The valve is designed for buried or above-ground installation and requires no routine maintenance.

Available in sizes DN50-DN1200 (NPS 2-48), pressure PN16-PN100 (Class 150-600). Body materials include L245, L360, WCB, LCC, and CF8. Designed to API 6D, ASME B16.34, and EN 12266.

Product packaging

We have cooperated with experienced shipping forwarders for many years, they arrange the shipment. No matter by express, by air or by sea, we will track the course of the goods all the way, to make sure goods arrive at you on time and in good condition.