A trunnion mounted ball valve is a type of ball valve where the ball is supported by trunnions (pins) at the top and bottom, rather than floating freely within the valve body. This design allows the ball to remain fixed in place and reduces the stress on the ball during operation. The trunnion mounted configuration makes it ideal for high-pressure, high-flow applications, as it requires less torque to operate compared to a floating ball valve. In a trunnion mounted ball valve, the ball is attached to two fixed supports, or trunnions, which are typically connected to the valve body. These trunnions allow the ball to rotate with minimal movement, ensuring a reliable seal and preventing wear caused by axial motion. The design offers a significant advantage in large diameter valves or high-pressure systems where torque would otherwise be excessively high.