In pneumatic technology, air filter, pressure relief valve and oil mist are called pneumatic three parts. In order to obtain a variety of functions, these three kinds of gas source processing elements are often assembled in sequence, which is called pneumatic triple. It is used for air purification, filtration, decompression and lubrication.
The installation sequence of the three major parts is air filter, pressure reducing valve and oil mist according to the direction of intake. The three components are indispensable gas source devices in most pneumatic systems. Installation near the gas-using equipment is the final guarantee of compressed air quality. Besides ensuring the quality of the three components, the design and installation of the three components should also consider such factors as space saving, convenient operation and installation, and arbitrary combination.