Pneumatic ball valve function
The working principle of the pneumatic ball valve is to make the valve open or blocked by rotating the spool. Pneumatic ball valve switch light, small size, can be made into a large caliber, reliable sealing, simple structure, easy maintenance, sealing surface and sphere are often in a closed state, not easy to be washed by the medium, in various industries have been widely used.
Pneumatic ball valve and plug valve is the same type of valve, only its closing part is a ball, the ball is rotated around the center line of the valve body to achieve the opening and closing of a valve.
Pneumatic ball valve use advantages
Pneumatic ball valve in the pipeline is mainly used to cut off speed, distribution and change the direction of the flow of the medium. 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 segment 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 also been widely used in vacuum systems.
4. Easy to operate, open and close quickly, from full open to full close as long as the rotation of 90 degrees, easy to remote control.
5. Convenient maintenance, pneumatic ball valve structure is simple, the sealing ring is generally active, disassembly and replacement are more convenient.
6. When fully open or fully closed, the sealing surface of the ball and the seat is isolated from the medium, and the medium will not cause erosion of the valve sealing surface when it passes through.
Seven. Wide range of application, small diameter to a few millimeters, large to a few meters, from high vacuum to high pressure can be applied.
8. Because the pneumatic ball valve power source uses gas, it is generally 0.2-0.8MPa pressure, which is relatively high. If the pneumatic ball valve leaks, relative to hydraulic, electric, gas can be directly discharged, there is no pollution to the environment, and it has high reliability.
9. Compared with manual and turbo-rotating ball valves, pneumatic ball valves can be configured with large diameters (manual and turbo-rotating ball valves are generally below DN300 caliber, and pneumatic ball valves can currently reach DN1200 caliber).
If you understand the manual ball valve, you will find that the advantages of pneumatic ball valve and manual ball valve are similar. At present, according to statistics, pneumatic ball valves have been widely used in petroleum, chemical, power generation, paper making, atomic energy, aviation, rockets and other departments, as well as People's Daily life.