The application and characteristics of pneumatic valve

Pneumatic valve evolved by the cock, rotation with cock, cock is an individual, there is a yuantong hole or passage through its axis, its working principle is through rotating the valve core to open or close the valve. Pneumatic valve switch is light weight, small volume, can be made into large caliber, reliable sealing, simple structure, easy maintenance. Sealing surface and often in the closed state, not easily be medium corrosion, has been widely used in many industries. Pneumatic valve and plug valve is the same type of valve, only the closing part is the body, the body moves around the center line of the valve body rotation to open and close the valve. Pneumatic valve is mainly used for pipeline, the flow direction of medium cutting speed, distribution, and change. Pneumatic valve is a valve product types, because of the advantages of compact structure, easy operation and maintenance has been widely used in many fields, in this paper, the characters and what are you talk about pneumatic valve? The characteristics of the pneumatic valve: friction torque, thrust bearing, reduce the stem, pneumatic valve can make the valve stem long smooth and flexible operation. , pneumatic valve is the smallest of all valve fluid resistance in class a, even if the reducing valve, the fluid resistance is small. , such as ptfe material has good self-lubrication, with body friction loss is small, so the long service life of pneumatic valve. Has the anti-static function, pneumatic valve: in the body, the valve stem and valve body between spring, static export will be generated switching process. , bottoms valve stem and valve stem head convex order to prevent the valve stem, stem seal damage caused by such as fire, convex order between the body and also can form metal contact, to ensure that the valve stem seal. , pneumatic valve stem seal is reliable, because only party and turn the stem without lifting movement, the valve stem packing seal is not easy to damage, and sealing ability increases as the medium pressure increases. , pneumatic valve seat sealing performance is good, use the sealing ring made of elastic material, such as teflon structure easy to seal, and valve sealing ability increases as the medium pressure increases.