The working principle of pneumatic ball valve by rotary valve core to make valve clear or block. Pneumatic ball valve switch light, small size, can make it big caliber, reliable sealing, simple structure, convenient maintenance, sealing surface and spherical often in the closed state, not pneumatic ball valves are easily medium erosion, widely applied in various industries.

Pneumatic ball valve and cock valve is belong to one type of valve, only its closing member is a ball, the ball around the center line of the valve body rotates to achieve open, closed a valve.