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Devilbiss Air compressors

Official Devilbiss air compressor parts

Devilbiss air compressors are the choice of homeowners for a wide range of useful applications such as filling your car tires and blowing sawdust out of your power saw. Devilbiss air compressors are rugged machines that typically last for years without having problems, but moving parts in an air compressor can break at any time. When that happens, you can get the repair parts you need from Sears PartsDirect to repair the failure.

Common Devilbiss air compressor replacement parts

  • Pressure switch. The pressure switch turns the air compressor on and off to regulate the tank air pressure.
  • Regulator. The regulator controls air pressure from the tank to the supply hose.
  • Safety valve. Attached to the manifold, the safety valve pops open to relieve excessive air pressure when the pressure switch fails to shut off the pump at the cut-out pressure setting.
  • Tank drain valve. Fixed at the bottom of the air tank, the drain valve drains condensate water from the tank.
  • Valve plate. Fixed above the cylinder, the valve plate controls air movement into and out of the cylinder to compress the air.

How to fix your Devilbiss air compressor when it won't start with a full air tank

If the compressor won't restart after it fills the air tank, the check valve is likely stuck open. The check valve prevents tank air from back flowing to the pump. The stuck-open check valve causes high pump head pressure, preventing the compressor from restarting. Test the check valve by shutting off the compressor and pulling the ring on the safety valve to bleed the air from the air tank until it’s empty. Turn on the compressor to fill the air tank. Bleed air out of the tank to reach the cut-in pressure so the pressure switch attempts to restart the motor to refill the air tank. If the compressor won't start with air in the tank, replace the check valve.

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