Chicago Pneumatic OEM 2901 9067 00 Thermal Valve Kit
The 2901906700 thermostatic valve kit is used on a wide variety of Chicago Pneumatic, Quincy, and Atlas Copco rotary screw air compressors. It is recommended to replace the thermal valve every two years or 8,000 hours of operation to prevent your compressor from overheating.
A compressor thermal valve opens when the oil gets hot to let coolant/oil flow through the cooler before the oil is sent back into the sump tank. This prevents the compressor from overheating. If your compressor is consistently shutting down on high temp and your oil is full, more than likely this valve needs to be replaced.
This 2901906700 thermal valve part number is also commonly shown as 2901 9067 00 and 2901-9067-00. The description may also read Thermal Valve Kit. This is an OEM part that was also used on several Atlas Copco and Quincy air compressors.