China Compressor For the setting of equipment pressure, the lowest pressure that meets the requirements of the production equipment can be used as the setting pressure. The frequency converter of the air compressor will adjust the speed of the frequency conversion air compressor according to the trend of fluctuations in the pressure of the pipe network. The frequency converter in this type of air compressor system makes the pressure on the pipe network stable, which can reduce or even eliminate pressure fluctuations. In this way, all the air compressors in the system are at a lower pressure that meets the production requirements. Ru