Atlas Copco 2901141150 OEM Minimum Pressure Check Valve Kit MPCV for GX7 and GX11 Compressors

Atlas Copco 2901141150 OEM Minimum Pressure Check Valve Kit MPCV for GX7 and GX11 Compressors

2901141150 is an Atlas Copco OEM minimum pressure check valve most commonly used on many versions of the Atlas Copco GX7 and GX11 rotary screw air compressors. It is recommended to replace the MPCV every two years or 8,000 hours of operation.

This 2901141150 minimum pressure check valve kit is also commonly shown as 2901 1411 50 or 2901-1411-50. 

There were several different MPCV kits used on the GX series of air compressors, including the models listed above. We highly recommend contacting us with your serial number to confirm this is correct for your air compressor.

The minimum pressure check valve keeps air pressure inside of the sump during the initial startup of the compressor. This helps the oil circulate throughout the compressor on start-up. Once the pressure inside of the oil sump reaches approximately 60psi, the valve will open and let compressed air flow downstream. A properly functioning MPCV will prevent oil carryover into your piping system. This will also prevent high pressure air from your receiver and air piping from re-entering internal compressor components. If air is leaking from the inlet after the compressor has been shut off for a period of time, there is a good chance that this valve failed and is letting high pressure air flow back inside of the compressor.