Pneumatic shut-off ball valve is composed of double (single) action pneumatic piston actuator and floating ball valve. It is equipped with travel limit switch, solenoid valve, pressure reducing valve and 0.4-0.7mpa air source to realize switching operation, and send two pairs of passive contact signals to indicate the switching of the valve.

Pneumatic shut-off ball valve is mainly used to cut off fast, distribute and change the flow direction of medium in the pipeline. Pneumatic ball valve is a new type of valve widely used in recent years. It has the following advantages:
1. The fluid resistance is small, and its resistance coefficient is equal to that of the pipe section with the same length.
2. The valve will be closed automatically in case of gas or power failure. Or close the valve by manual device.
3. Tight and reliable. At present, plastic is widely used as the sealing surface material of ball valve, with good sealing performance. It has also been widely used in vacuum system.
4. It is easy to operate and open and close quickly. It only needs to rotate 90 ° from full open to full close, which is convenient for remote control.