The classification of the directional control pneumatic valve (1)

in practice, according to the different requirements of direction control pneumatic valve is divided into several categories:
( ） With the regulation of gas flow direction of pipeline, if only allow gas one-way flow of so-called one-way pneumatic valve pneumatic control valve, such as one-way pneumatic valve, pneumatic valve spindle; Can change the flow control gas pneumatic valve, pneumatic valve is called as common wayport, wayport, wayport, wayport, etc.
( ） Can be divided into pneumatic valve and control, mechanical pneumatic valve, pneumatic valve, pneumatic control pneumatic valve. Solenoid pneumatic valve, it can be divided into single and double two electric control pneumatic valve; Mechanical pneumatic valve can be divided into pneumatic ball valves, pneumatic valves and other wheels; Gas control pneumatic valve pneumatic control also can be divided into single, double pneumatic valve, pneumatic control enters the manual pneumatic valve, pneumatic valve points on two kinds of pneumatic valve.
( ） Engineering can be divided into pneumatic valve and the forerunner of moving pneumatic valve, pneumatic valve or direct action by the electromagnetic force, air force directly to the pneumatic valve to implement the change; By the guide of pneumatic valve pilot pneumatic valve head is mainly two parts, in the first piston driven main stem pneumatic valve guide, in order to realize a commutation of their sentences.
( ） According to the working position of the pneumatic valve, pneumatic valve stem can be divided into road, vent valve.
( ） According to the division of the number of the pneumatic valve hole can be divided into the port, the port, the port pneumatic valve. Keywords:
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