High-Pressure Washers & Surface Cleaners

What does a Thermal Relief Valve do on a pressure washer pump?

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 Correct IncorrectIf bypass water exceeds ~145°F (63°C), a heat-sensitive wax element opens, dumping hot water onto the ground and drawing in fresh cool water from the garden hose to protect the pump.

What does a Thermal Relief Valve do on a pressure washer pump?

• It stops the water from freezing in winter
• It automatically discharges scalding bypass water onto the ground to prevent pump seal meltdown
• It regulates the gas engine choke
• It heats cold water for hot washing