The working principle of pneumatic ball valve is to rotate the spool to make the valve unblock or block. Pneumatic ball valve switch is light, small in size, can be made into a large caliber, reliable sealing, simple structure, convenient maintenance, sealing surface and spherical surface are often in a closed state, not easy to be eroded by the medium, widely used in various industries.
Pneumatic ball valve and plug valve are the same type of valve, only its closing part is a ball, the ball rotates around the center line of the valve body to achieve a valve that opens and closes.
Pneumatic ball valves are mainly used in pipelines to cut off fast, 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 the pipe section of the same length.
2. Simple structure, small size, light weight.
3. Tight and reliable, the sealing surface material of the ball valve is widely used in plastic, good sealing, and has been widely used in vacuum systems.
4. Easy to operate, quick opening and closing, from full open to full off as long as the rotation is 90°, convenient for long-distance control.
5. Easy maintenance, pneumatic ball valve structure is simple, sealing ring is generally active, disassembly and replacement are more convenient.
6. When fully open or closed, the sealing surface of the ball and the valve seat is isolated from the medium, and when the medium passes, it will not cause the erosion of the sealing surface of the valve.
7. Wide range of application, diameter from small to a few millimeters, large to several meters, from high vacuum to high pressure can be applied.
8. Because the power source of pneumatic ball valve uses gas, generally 0.2-0.8MPa pressure, it is relatively safe. If the pneumatic ball valve leaks, compared with hydraulic and electric, the gas can be directly discharged, which has no pollution to the environment and has high safety.
9. Compared with manual and turbine rotary ball valves, pneumatic ball valves can be configured with large caliber, (manual and turbine rotary ball valves are generally below DN300 caliber, pneumatic ball valves can reach DN1200 caliber. ）
Pneumatic ball valves have been widely used in petroleum, chemical, power generation, papermaking, atomic energy, aviation, rockets and other departments, as well as people's daily life.
