3-Piece Welded Ball Valve (SW/BW)

Description

The 3-Piece Welded Ball Valve is engineered for critical industrial applications where threaded connections are unsuitable due to high pressure, vibration, or temperature cycling. The weld-end connection creates a seamless, monolithic bond with the pipeline, effectively eliminating the risk of thread leakage. Like your standard 3-piece valves, this model remains fully serviceable, allowing the center body to be removed for seat/seal replacement while the end-caps remain welded to the pipe.

Technical Specifications

• Design Type: 3-Piece bolted body, Full Bore

• Connection Type: Socket Weld (SW) or Butt Weld (BW)

• Operation: High-torque lever with locking device

• Body Material: Investment Cast Stainless Steel (SS316 / CF8M)

• Sealing: PTFE/RTFE seats and gaskets (Graphite seals optional for high-temp)

• Pressure Rating: Class 800 / PN63 / PN100

• Features: Anti-blowout stem, ISO mounting pad for future automation

Key Applications

• High-Pressure Process Lines: Mandatory for piping where threads could fail under hydraulic shock.

• Oil & Gas/Petrochemical: Standard requirement for plant infrastructure in Ras Laffan and Mesaieed.

• Steam Systems: Designed to withstand the stresses of thermal expansion better than threaded equivalents.

• Permanent Infrastructure: The preferred choice for critical shut-off points that must be leak-proof for the life of the plant.