What are the characteristics of pneumatic ball valves compared to other pneumatic valves?
1, anti-static function: a spring is placed between the ball, the valve stem and the valve body, which can discharge the static electricity generated by the switching process.
2, long service life: Because the material such as PTFE has good self-lubricating property and the friction loss with the sphere is small, the service life of the pneumatic ball valve is long.
3, small fluid resistance: pneumatic ball valve is the smallest of the fluid resistance of all valve classification, even the reduced diameter pneumatic ball valve, its fluid resistance is quite small.
4, the stem seal is reliable: It has two sealing surfaces, and the sealing surface material of the ball valve is widely used in various plastics. It has good sealing performance and can be completely sealed in the vacuum system. It has also been widely used because the valve stem only rotates without lifting movement. The packing seal is not easily broken, and the sealing capacity increases as the pressure of the medium increases.
5, the valve seat sealing performance is good: the sealing ring made of elastic material such as PTFE, the structure is easy to seal, and the valve sealing ability of the pneumatic ball valve increases with the increase of the medium pressure.
6. The thrust bearing reduces the frictional torque of the valve stem, which makes the valve stem smooth and flexible for long-term operation. The structure is simple, small in size and light in weight.
7, easy to operate, open and close quickly: from full open to full off as long as 90 ° rotation, easy to control over long distances.
8, easy maintenance: the ball valve is simple in structure, the sealing ring is generally active, the removal and replacement are more convenient. When fully open or fully closed, the sealing surface of the ball and the valve seat is isolated from the medium. When the medium passes, it will not cause the valve to seal. Erosion of the surface.
9, a wide range of applications: the diameter from small to a few millimeters, up to a few meters, from high vacuum to high pressure can be applied due to the wiping nature of the ball valve during the opening and closing process, it can be used in media with suspended solid particles.
10, high processing accuracy: expensive, high temperature should not be used, such as impurities in the pipeline, easy to be blocked by impurities, resulting in the valve can not open.