For the normal and safe use of the air compressor, the exhaust pipe will be installed on the air compressor. The exhaust pipe sometimes acts as an unloading agent. The function of the exhaust pipe of the air compressor. When the air consumption changes, the intake valve adjusts the opening degree of the valve body through the control system to match the air consumption. It is the valve part that controls the air intake and the air intake of the air compressor. The working principle of the air compressor exhaust pipe is: when the air compressor is working, the exhaust pipe is closed, and when the air compressor stops, the exhaust pipe is opened to discharge the high pressure air in the outlet pipe of the air compressor, which is conducive to the next light load starting of the air compressor. For the important part of the air compressor, regular inspection and repair are needed to achieve the safe and normal use of the machine and confirm personal safety.