Reduced pressure pneumatic valve type classification is introduced

the reduced pressure pneumatic valve type classification has the following three types:
acting pressure pneumatic valve type classification is introduced. The most simple decompression, pneumatic valve, direct acting pressure pneumatic valve, with flat diaphragm or bellows. Because it is independent structure, there is no need to install external sensing line in the downstream. It is the smallest in three kinds of vacuum pneumatic valve, use one of the most economic, designed for low flow rate. Direct acting pressure downstream of the accuracy of the pneumatic valve is usually set point of + / - %。
piston vacuum pneumatic valve type classification is introduced. This type of vacuum pneumatic valve set two kinds of pneumatic valve, pneumatic valve guide and main pneumatic valve - all in one. Guide the design of the pneumatic valve is similar to direct acting pressure pneumatic valve. From leading pneumatic valve on the piston, the function of exhaust pressure to open the main pneumatic valve piston. If the pneumatic valve is bigger, cannot open directly, this kind of design will use open the pneumatic valve inlet pressure. Therefore, this type of vacuum pneumatic valve, compared with the direct acting pressure pneumatic valve, under the same pipe size, capacity and accuracy ( +/- %） Higher. With direct acting pressure pneumatic valve is the same, reduced pressure pneumatic valve internal pressure, external sensing line installation.
diaphragm pressure pneumatic valve type classification is introduced. In this type of vacuum pneumatic valve, double diaphragm instead of the piston in the afferent type vacuum pneumatic valve. The increase of membrane area to open a large pneumatic valve, main and under the same pipe size, its capacity than the afferent piston vacuum pneumatic valve is greater. In addition, the diaphragm is more sensitive to stress change, the accuracy of + / - %。 Positioning accuracy is higher due to the downstream of the sensing line ( Pneumatic valve outside) The location less gas or liquid turbulence. The reduced pressure pneumatic valve is flexible, can use different types of pneumatic valve guide ( Such as pressure pneumatic valve, pneumatic valve, air temperature loading pneumatic valve.