General Pump Thermal Relief Valve 145Deg pressure_up-to-3500psi General Pump - Interpump 66

General Pump - Interpump 66 series W1550 triplex pressure wash pump

1/4" kit for 1-1/2 to 6 inch pipe

4 GPM @ 550 RPM

M22 Twist Connect Outlet

Available with built in Unloader

General Pump Thermal Relief Valve 145Deg pressure_up-to-3500psi General Pump - Interpump 66General Pump thermal relief valve protects your power washer pump from overheating. At 145 F the valve opens to allow cool water to enter the pump if the washer is left running without the trigger being pulled. Maximum Rated Pressure: 145psi Install in bypass loop or low pressure port. Thread Sizes*: 1 4" MPT, 3 8" MPT, 1 2" MPT *NOTE* NPT cannot be measured by a tape. See table below and if you are unsure what thread size you need please contact us.