Comprehensive Package: Each purchase comes with 2 thermal relief valves, each featuring a 14inch NPT thread size. Designed to automatically engage at 145F, these valves your pressure washer operates safely by regulating internal temperatures up to 200 PSI.Engineered for Durability: Crafted from robust brass, our thermal relief valves offer exceptional resistance to oil and , ensuring and reliable performance under tough working conditions. A vital investment for maintaining your pressure washer's efficiency.Protective Mechanism: These valves an essential role by protecting pressure washers from overheating. The built-in seal melts at 145F, allowing hot water to exit and cool water to enter, thus safeguarding the pump and extending its lifespan.Universal Fit: Perfect for use with a variety of pressure washer including , , , and more. They are direct replacements for part numbers 678169004, 678169002, 678169001, and parts 208673 , enhancing compatibility across several models.Ease of Installation: Simplify your maintenance routine with our thermal relief valves that are easy to install without the need for professional help. The threaded 14inch NPT connection allows for quick attachment or detachment, making it a practical choice for regular maintenance.Colour:GoldMaterial:BrassPackage Contents:2 x Thermal Relief ValveOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +- 1-3cm.