Main Functions
Prevents backflow
Stops compressed air stored in the tank from returning to the compressor head.
Protects the compressor
Reduces strain on the motor and pump during startup.
Maintains tank pressure
Keeps air pressure stored in the receiver tank when the compressor is switched off.
Works with the unloader valve
Many compressors release the air trapped between the pump and the non-return valve when stopping, making the next start easier