concrete pumper trucks

4 to 3 GPH firing rate

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Match the model with your water flow

Externally plumbed unloader valve

General Pump Thermal Relief Valve 145Deg engine_powerease concrete pumper trucksGeneral 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.