Atlas Copco 1625005540 OEM Minimum Pressure Check Valve MPV Kit, MPCV

Atlas Copco 1625005540 OEM Minimum Pressure Check Valve MPV Kit, MPCV

1625005540 is an OEM minimum pressure check valve from Atlas Copco. This item may be displayed in your parts manual as 1625 0055 40 or 1625-0055-40.

The 1625005540 MPCV kit was used on several versions of the Atlas Copco 15-30HP air compressors in their G and GA model range. Please note the G and GA compressors could have used several different minimum pressure check valves. We highly recommend contacting our parts department if you would like confirmation that this part will work with 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.