Featured Image for Thermal Relief Valves

These safety devices help to protect a pump by removing hot water that is present on the inlet side of the high pressure pump, which allows cooler water to remain.  They work in an automatic manner and automatically reset as the temperature falls below the set point.  The key benefit of the thermal relief valve is that it allows an operator to run a unit in a bypass mode for an extended period,which reduces the changes of premature seal wear on the high pressure pump.

Image Model No. Inlet Port
featured image for 23420B 1/4" NPT
featured image for 23421B 3/8" NPT
featured image for 23422B 1/2" NPT