Comprehensive Package: Each purchase includes 2 thermal relief valves with a 1/4 inch NPT thread size. Designed to activate automatically at 145F, these valves help maintain safe operating conditions by regulating internal temperatures and pressures up to 200 PSI.Engineered for Durability: Made from high-quality brass, these thermal relief valves offer excellent resistance to oil and corrosion, ensuring long-lasting and reliable performance under demanding conditions. An essential component for maintaining your pressure washers efficiency.Protective Mechanism: These valves play a critical role in protecting pressure washers from overheating. The built-in seal is designed to release at 145F, allowing hot water to discharge and cooler water to enter, helping prevent damage to the pump and extending its service life.Universal Fit: Compatible with a wide range of pressure washer models, including various brands. Direct replacement for part numbers 678169004, 678169002, 678169001, and 208673, offering broad compatibility across multiple units.Ease of Installation: Designed for simple installation without the need for professional tools or assistance. The 1/4 inch NPT threaded connection allows for quick and secure attachment, making maintenance easy and efficient.Color: Gold Material: Brass Package Contents: 2 x Thermal Relief Valve Note: Light reflection and differences in display screens may cause slight variations in color between the product image and the actual item. Measurement may vary by +/- 1-3 cm.