What is the standard of air compressor intake negative pressure

The normal negative pressure value of the air inlet of the air compressor should generally be between 0.5 and 0.7bar. This range can ensure the normal operation of the air compressor and avoid overheating or overpressure. At the same time, the limit value of the suction negative pressure of the air compressor is about-50kPa (I. e. -0.5bar), but in actual operation, due to the influence of various factors, such as the resistance of the intake pipe and the connecting piece, and the intake filter and other factors will also affect the size of the suction negative pressure, so the actual suction negative pressure may be smaller than this limit value.

It should be noted that the air compressor of different models, specifications and usage scenarios may have different intake negative pressure standards. Therefore, in specific applications, it is recommended to refer to the technical manual of the air compressor or consult the manufacturer for the most accurate information.