The ball is integrated with the upper and lower valve stems, or made into an integral coupling ball, that is, the ball and the upper and lower valve stems are forged (welded) into one body and mounted on the bearing. The ball can be free along the axis perpendicular to the valve channel. Rotate, but cannot move along the channel axis. Therefore, when the fixed ball valve is working, all the force generated by the fluid pressure in front of the valve on the ball is transmitted to the bearing, and the ball will not move to the seat behind the valve, so the valve seat will not bear excessive pressure, so the fixed ball valve It has small torque, small valve seat deformation, stable sealing performance and long service life. It is suitable for high pressure and large diameter applications.
