The ASTM A216 WCB Trunnion Mounted Ball Valve is a heavy-duty 100 mm (4-inch) full bore isolation valve designed for high-pressure pipeline and process applications. Featuring a robust carbon steel (WCB) body and ASTM A182 F316 stainless steel ball, it combines structural strength with superior corrosion resistance. The trunnion-mounted design supports the ball at top and bottom, enabling reliable sealing at Class 300 LB pressure ratings while reducing operating torque. Engineered to API 6D standards with RF flanged ends, this valve ensures bubble-tight shutoff.