Ball valve It has the same action of rotating 90 degrees, except that the plug body is a sphere with a circular through hole or passage through its axis. The ball valve is mainly used in the pipeline to cut off, distribute and change the flow direction of the medium. It only needs to rotate with 90 degrees of operation and a small rotating torque can close the tightness. The ball valve is suitable for use as a switch or shut-off valve, but recent developments have designed the ball valve so that it has a throttling and control flow, such as a V-ball valve.
The main characteristics of the ball valve are its compact structure, reliable sealing, simple structure, convenient maintenance, sealing surface and spherical surface often in the closed state, not easy to be eroded by medium, easy to operate and maintain, and suitable for water, solvent, acid and natural gas, etc. Medium, but also suitable for working conditions of poor media, such as oxygen, hydrogen peroxide, methane and ethylene, have been widely used in various industries. The ball valve body can be integral or modular.
advantage
1. The fluid resistance is small, and the full diameter ball valve basically has no flow resistance.
2. Simple structure, small size, light weight.
3. Close and reliable. It has two sealing surfaces, and the current ball valve sealing surface material uses a wide range of plastics, good sealing, can achieve a complete seal. It has also been widely used in vacuum systems.
4. Easy to operate, fast opening and closing, as long as the rotation from 90 degrees from full open to fully closed, easy remote control.
5. Easy maintenance, ball valve structure is simple, the seal ring is generally active, removal and replacement are more convenient.
6. When fully open or fully closed, the sealing surfaces of the ball body and the valve seat are isolated from the medium. When the medium passes through, the sealing surface of the valve will not be eroded.
7. Wide range of applications, from small to several millimeters in diameter, up to a few meters in size, from high vacuum to high pressure can be applied.
8. Since the ball valve has wiping during opening and closing, it can be used in media with suspended solid particles.