General description The CCYKXAA 1/4" NPT Pressure Washer Pump Thermal Relief Valve is designed to protect your pressure washer pump from overheating. This essential component ensures that your pump operates within a safe temperature range, preventing damage and extending its lifespan. Each package includes 2 pressure washer release valves. Technical specifications Fitting: 1/4" NPT Male thread outer diameter: 0.55" Dimensions: 4×1×1 cm Compatibility and accessories Compatible with brands such as Generac, Homelite, Karcher, Briggs, Power Stroke, Husky, Black Max, Craftsman, Him Ore, and Ridged pressure washers Replaces Homelite part numbers: 678169004, 678169002, 678169001 Replaces Briggs & Stratton parts: 208673GS, 21783GS, 194298GS, B3090GS Usage The thermal relief valve opens to release hot water and allow cold water to enter the pump when water temperatures exceed 300°F, preventing pump seal failure and maintaining safe operating temperatures.