Back pressure pneumatic valve is introduced working principle of pneumatic valve and regulating role

about the working principle of pneumatic valve regulating principle and function of mixed gas meter will brief introduce.
a. The working principle of
high pressure medium through a small hole in a relatively large cavity filling complete decompression, is actually stress through intercepting, double side of the diaphragm or piston is out of the mouth, one side is for pressure, and manipulation of the pore size of pneumatic valve stem and diaphragm ( Piston is linked together, such as long as give a fixed pressure, so the oral cavity pressure will always equal to the pressure, the thought that the given pressure to have a spring or air or hydraulic pressure source to supply.
2.
. Working medium is a mine of air, the air itself is not to spend money. Exhaust with a brief, polluting the environment, the cost is low.
. Full pneumatic control has fire, explosion-proof, moistureproof ability. Compared with the method of hydraulic, pneumatic method can be used in the high temperature occasion.
. Parts of the signal conditioning, automatic control of pneumatic valve opening, and then in order to regulate medium flow rate, pressure and liquid level.
. Use pneumatic valve internal different cross-sectional area on both ends of the piston pressure difference, change after pneumatic valve pressure, reach the decompression intentions.
. Stable outlet pressure, decompression and the effect of voltage regulator.