Trunnion Ball Valve Design: Seats, DBB & Selection
Trunnion Ball Valve Design Guide: Seats, DBB, Cavity Relief, Torque and Pipeline Selection A trunnion mounted ball valve is a quarter-turn isolation valve in which the ball is mechanically supported rather than allowed to move freely between the seats. That fixed-ball arrangement changes how pressure loads are carried, how the seats create sealing force, how […]
Trunnion Ball Valve Design Guide: Seats, DBB, Cavity Relief, Torque and Pipeline Selection
Trunnion Ball Valve Design Guide: Seats, DBB, Cavity Relief, Torque and Pipeline Selection A trunnion mounted ball valve is a quarter-turn isolation valve in which the ball is mechanically supported rather than allowed to move freely between the seats. That fixed-ball arrangement changes how pressure loads are carried, how the seats create sealing force, how […]
Ball Valve Wrenches and Manual Operating Tools: Safe Torque and Operation Guide
Learn how ball valve wrenches and manual operating tools affect safe and reliable valve operation. The guide explains why wrench length, valve size, operating torque, stem design, seat friction, pressure conditions, tool fit, and operator technique must be matched correctly to avoid over-torque, stem damage, seat wear, unsafe handle movement, and premature ball valve failure.