Pneumatic valve working principle and characteristics
Pneumatic valve works
Pneumatic valve rotated 90 degrees just use gas operation and a small torque can be closed tightly. The body cavity of full equality for the media to provide a little resistance, through the flow channel. Generally considered the most suitable valve opening and closing done directly used, but recent development has been designed to make it a throttle valve and flow control purposes. Main features of valve is itself compact, easy operation and maintenance for water, solvents, acids, and natural gas work in general media, but also for working conditions of media, such as oxygen, hydrogen peroxide, methane and ethylene. Ball valve can be the whole, it can be modular.
Pneumatic valve works by rotating the spool to make the valve flow or occlusion. Pneumatic Valve switch light, small size, can be made into a large-caliber, reliable sealing, simple structure, easy maintenance, regular spherical surface and seal in the closed state, the media can not easily be eroded, in various sectors has been widely used.
Pneumatic ball valves and plug valves belong to the same type of valve, only it's turned off parts of a sphere, the sphere rotates around the body centerline to achieve open and close a valve.
Pneumatic valve in the pipeline is mainly used for cutting speed, distribution and change the direction of media flow. Pneumatic valve is widely used in recent years, a new type of valve, it has the following advantages:
1 small fluid resistance, the resistance coefficient with the length of the pipe sections are equal.
2 simple structure, small size and light weight.
3 Close and reliable valve sealing surface material widely used carbon fiber, PPL, good sealing performance, vacuum system has also been widely used.
4 easy to operate, opening and closing rapidly, from fully open to fully closed as long rotated 90 °, to facilitate remote control.
5 easy maintenance, pneumatic valve structure is simple, seals are generally active, are relatively easy to replace demolished.
6 In the fully open or fully closed, the ball and seat sealing surface and the dielectric isolation, through the media, will not cause the valve sealing surface erosion.
7 for a wide range of diameter from small to a few millimeters to a few meters from the high vacuum to high pressure can be applied.
Pneumatic valve has been widely used in petroleum, chemical, power generation, paper, nuclear, aviation, rockets and other departments, as well as people's daily life.