What is the working principle of pneumatic valve?

Pneumatic valve is a valve with pneumatic actuator. Pneumatic valve specific classification are: stainless steel pneumatic valve, pneumatic valve, plastic sanitary pneumatic valves, pneumatic valves, carbon steel 2 vent valve, tee pneumatic valve, pneumatic valve spool. Working principle of the pneumatic valve:
pneumatic valve only need to use pneumatic operation USES air rotation operation and small rotational torque can be closed tight. Full equality of the valve body cavity for medium resistance is very small, straight flow channel. Is generally thought that open and close valve suitable for direct to do the most in use. 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. Valve body can be a whole, also can be combined. Pneumatic valve is a valve with pneumatic actuator, pneumatic actuator execution speed is relatively fast, fast switching speed. Seconds/time, so usually also called pneumatic quick cut-off valve. Pneumatic valve is evolved by the cock. It has the same rotation movement, different is the cock body is a body, has a circular hole or channel through its axis. Surface and opening ratio should be such, that when the rotation at the inlet and outlet shall all be present surface, thereby cutting flow. This kind of valve can be installed in any position in the pipeline. Pneumatic valve usually configure various accessories, such as solenoid valve, air source treatment sanlian pieces, limit switch, locator, control box, etc. , in order to realize the local control and remote centralized control, in the control room can control the switch of the valve, do not need to run to the field or high altitude and dangerous manual control, to a great extent, save the human resources and time and safety.