Pneumatic ball valves are mainly used in the pipeline to cut off the speed, distribute and change the flow direction of the medium. Pneumatic ball valve is a new type of valve, which has the following advantages:

1. The fluid resistance is small, and its resistance coefficient is equal to that of a pipe section of the same length.

2. Simple structure, small size and light weight.

3. Tight and reliable, the sealing surface material of the ball valve is widely used in plastics, with good sealing performance, and has been widely used in vacuum systems.

4. Easy to operate, fast opening and closing, only need to rotate 90° from fully open to fully closed, which is convenient for remote control.

5. The maintenance is convenient, the structure of the pneumatic ball valve is simple, the sealing ring is generally movable, and it is convenient to disassemble and replace.

6. When fully open or fully closed, the sealing surface of the ball and the valve seat is isolated from the medium, and when the medium passes through, it will not cause erosion of the valve sealing surface.

7. It has a wide range of applications, with diameters as small as a few millimeters and as large as several meters, and can be applied from high vacuum to high pressure.

8. Because the power source of the pneumatic ball valve is gas, the pressure is generally 0.2-0.8MPa, which is relatively safe. If the pneumatic ball valve leaks, compared with hydraulic and electric, the gas can be discharged directly, which has no pollution to the environment and has higher safety.

9. Compared with manual and turbine rotating ball valves, pneumatic ball valves can be configured with larger diameters (manual and turbine rotating ball valves are generally below DN300 caliber, and pneumatic ball valves can reach DN1200 caliber.)

Pneumatic ball valves have been widely used in petroleum, chemical industry, power generation, papermaking, atomic energy, aviation, rocket and other departments, as well as in people's daily life.