Pneumatic flange ball valve is a ball valve with a pneumatic actuator. The execution speed of pneumatic actuators is relatively fast, and workers do not need to do it themselves, which saves human resources and time to a large extent. Pneumatic flange ball valve is evolved from the globe valve. It has the same rotary 90 degree lift action, except that the cock body is spherical and has circular through-holes or channels through its axis. The proportion of the sphere and the passageway should be such that when the ball is rotated 90 degrees, the sphere should be all present at the inlet and outlet, thus cutting off the flow. Pneumatic Ball Valve: (1)Floating pneumatic ball valve The ball of the pneumatic ball valve is floating, and under the action of the medium pressure, the ball can produce a certain displacement and press tightly on the sealing surface of the outlet end to ensure that the outlet end is sealed. (2)Fixed ba…