Shop thermal relief valves for pressure washers at Sun Brite Supply. Thermal relief valves protect your pump from overheating by releasing hot water when the trigger gun is closed and water recirculates through the pump head.

Pump Protection Thermal Relief Valves

Every pressure washer pump needs a functioning thermal relief valve. When the trigger is released, water recirculates and heats rapidly. Thermal relief valves open to dump hot water and allow cool water in, preventing seal damage and pump failure. Sun Brite Supply stocks multiple sizes and ratings.