Ingersoll Rand Minimum Pressure Check Valve for R4-11 Compressors

Ingersoll Rand OEM 23694938 Minimum Pressure Check Valve (MPCV) for R4-11 Compressors

23694938 is a minimum pressure check valve for the Ingersoll Rand R4-11kw rotary screw air compressors. This is an OEM part manufactured by Ingersoll Rand. The MPCV sits on the side of the separator element block. This is a wear item and should be replaced every 8,000 hours or once per year when performing a general preventive maintenance.

The minimum pressure check valve keeps air pressure inside of the separator tank 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.

23694938 MPCV is used on the following Ingersoll Rand Air Compressors

• R4i
• R5.5i
• R5.5n
• R7.5i
• R7.5n
• R11i
• R11n
• R4i TAS
• R5.5i TAS
• R5.5n TAS
• R7.5i TAS
• R7.5n TAS
• R11i TAS
• R11n TAS