The principle and advantages of pneumatic ball valve

pneumatic ball valve is evolved by the cock pneumatic valve. It has the same rotation movement, different is the cock body is ball, a circular hole or channel through its axis. Spherical and opening ratio should be such, that is when the ball rotation, should all present in the inlet and outlet sphere, thus blocking flow. This kind of pneumatic valve can be installed in any position in the pipeline. Pneumatic ball valve only need to use pneumatic actuators to drive the rotation of the body as a degree, can be achieved to truncate the medium flow and the opening of the function. And only need a small rotational torque can be closed tightly. Full equality of the pneumatic valve body cavity provides medium with a resistance is small, and straightway port. Generally think of pneumatic ball valve is suitable for direct to do the most open and close, but recent development has pneumatic ball valve designed to make it with throttling and control flow. Pneumatic ball valve itself is the main characteristics of compact structure, easy operation and maintenance, and is applicable to water, solvent, acid and gas, such as general work medium, but also is suitable for the working conditions of media, such as oxygen, hydrogen peroxide, methane and ethylene. Pneumatic valve pneumatic ball valve body can be as a whole, also can be combined. Pneumatic ball valve in the line is mainly used to do in the cutting speed, distribution, and change the flow direction of medium. Pneumatic ball valve is widely used in recent years a new type of pneumatic valves, it has the following advantages:. Fluid resistance is small, its resistance coefficient with section of equal length. 。 Simple structure, small volume, light weight. 。 Close and reliable, the pneumatic ball valve sealing surface of materials widely used plastic, sealing good, also has been widely used in the vacuum system. 。 Easy to operate, open and close quickly, from open to close as long as the rotating °, is advantageous for the remote control. 。 Pneumatic valve has simple structure, convenient maintenance, pneumatic ball sealing ring are generally activities, remove the replacement is more convenient. 。 In full open or full close, the sphere and the pneumatic valve seat sealing surface and the dielectric isolation, medium through, can not cause erosion of pneumatic valve sealing surface. 。 Applicability is wide and size from small to several millimeters, big to a few meters, from high vacuum to high pressure can be applied. 。 Because pneumatic ball valve is a gas that is used by the power source is commonly. - 。 MPa pressure, is relatively safe. Pneumatic ball valve if air leakage, the relative hydraulic, electric, gas can directly discharge, no pollution to the environment, and has higher security. 。 Compared with the manual and pneumatic turbine rotating ball valve, pneumatic ball valve can be large caliber configuration, ( Manual and pneumatic turbine rotating ball valve is generally below DN caliber, pneumatic ball valve DN caliber can be achieved at present. Pneumatic ball valve has been widely used in petroleum, chemical, power, papermaking, atomic energy, aviation, rockets and other departments, as well as People's Daily life.
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