The working principle of pneumatic ball valve is to make the valve open or closed by rotating the spool. Pneumatic ball valve switch light, small volume, can be made of a large diameter, reliable sealing, simple structure, easy maintenance, sealing surface and sphere often in a closed state, not easy to be medium erosion, widely used in various industries.

Pneumatic ball valve and plug valve is the same type of valve, only its closing part is a ball, the ball around the valve body center line for rotation to open, close a valve.