Fully Welded Ball Valve

Fully-Welded Ball Valve (Butt-Weld Ends, Worm-Gear Operated)

This fully-welded ball valve is engineered for district heating, gas distribution, and long-distance pipeline applications where maximum leak-tightness and zero maintenance are required. The one-piece welded body eliminates flange joints and external seal points, forming a fully integral pressure-containing shell. Butt-weld ends connect directly to the pipeline, creating a homogeneous leak-free joint.

The trunnion-mounted ball design delivers reliable shut-off and low operating torque across a wide pressure range. The welded body is fabricated from high-grade steel plate and fully stress-relieved to prevent distortion. An external orange epoxy coating provides corrosion protection for buried or above-ground service. The worm-gear operator with handwheel allows easy manual operation and can be fitted with extension stems for buried installation.

Standard features include cavity pressure relief, anti-static device, fire-safe seat design, and permanent sealed stem packing. The valve is maintenance-free for the design life of the pipeline. End connections are prepared per ASME B16.25. Available with manual, electric, pneumatic, or hydraulic actuation.

Typical sizes DN50-DN1200 (NPS 2-48), pressure PN16-PN40 (Class 150-300). Body materials include L245, L360, WCB, and stainless steel. Designed to API 6D, EN 12266, and GOST standards.

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.