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Check Valves | Regulator kits

Hard-to-Find Repair Parts No Longer Available Anywhere Else

Why These Parts Are Hard to FindMany older machines are still perfectly usable, but the manufacturers have stopped producing the small components that keep them running.
OnlyRepairParts focuses on locating and reproducing discontinued OEM parts for equipment that is still worth repairing.
Common examples include:
-air compressor check valves
-obsolete pressure switches
-discontinued mower springs
-replacement components for older power tools
If a small part fails, an otherwise good machine often gets thrown away. Our goal is to keep that equipment working.

OEM replacements and discontinued parts sourced for equipment still worth keeping alive.

Sourced by a former repair parts specialist with decades of experience locating discontinued OEM replacements.

More discontinued parts being added.

Air Compressor Leaks Air After Shutting Off

If your air compressor leaks air after it shuts off, the problem is often the tank check valve. The check valve lets air into the tank, then stops tank pressure from flowing back toward the pump and pressure switch.One sign of a bad check valve is air hissing from the small tube or fitting on the side of the pressure switch after the compressor shuts off.A small hiss for a few seconds can be normal if it’s coming from the pressure switch unloader. But if air keeps leaking after shutdown, the check valve may not be sealing.Where is my check valve?
Think of your check valve like an iceberg. Most of it is hidden. The important part is actually inside your air tank.
Air flows from the pump head through a supply tube, then into the top of the check valve. The top may look like a simple brass nut or fitting, but it is not just a nut. It is the visible top of the check valve.Most of the check valve threads into the tank, where moisture and rust can damage it over time.

rust embedded inside of an air compressor check valve

Available Replacement Check Valves

Regulator Leaking
Regulator Leaking
*Is air hissing from under the cap of your air pressure regulator?*Are you unable to adjust the air pressure going to your hose?These are common signs that the internal parts of your air pressure regulator are worn. Air may be leaking around the diaphragm or o-ring seal.Some older regulators can be repaired with a rebuild kit instead of replacing the entire regulator.Click the button below to see the regulator repair kits we currently have available.

Questions About Fitment?Email a clear photo of your old part and the model number from your compressor.[email protected]