The thermal relief valve keeps pressure cleaner pumps operating in a safe range to prevent overheating (caused by recirculating water). At water temperatures above 145º F, packing seals may fail. The pump then overheats. When the system is in bypass mode, the thermal relief valve opens to release hot water. Cold water can then enter the pump so it continues to operate at a safe temperature. Should the pump overheat, thermal relief valves must be replaced.
Thermal Relief Valves
Thermal Relief Valve
A MUST for any pump that might ever be left in bypass mode (unloading) for more than 15 seconds! Protects the pump from overheating caused by recirculating water.
Installs in bypass line
Automotive style wax element
Automatically resets at cool down to 115° +F
No adjustment required
1/8" FPT side discharge
125 PSI inlet pressure
2.5 GPM flow
(Shipping charge of $8.95 will apply on these items if the total order is less than $69.00)