Comprehensive Package: Each purchase includes 2 thermal relief valves with a 1/4 inch NPT thread size. Designed to activate automatically at 145°F, these valves help maintain safe operation of your pressure washer by regulating internal temperatures under pressures up to 200 PSI. Engineered for Durability: Made from high-quality brass, these thermal relief valves provide excellent resistance to oil and corrosion, ensuring long-lasting and reliable performance in demanding conditions. A key component for preserving your pressure washer’s efficiency. Protective Mechanism: These valves play a critical role in preventing overheating in pressure washers. The integrated seal is designed to melt at 145°F, allowing hot water to discharge and cooler water to enter, thereby protecting the pump and extending its service life. Universal Fit: Compatible with a wide range of pressure washer models, including various brands and types. These are direct replacements for part numbers 678169004, 678169002, 678169001, and 208673, offering broad model compatibility. Ease of Installation: Designed for simple, tool-free installation without the need for professional assistance. The 1/4 inch NPT threaded connection enables quick and secure attachment or removal, making maintenance convenient and efficient. Color: Gold Material: Brass Package Contents: 2 x Thermal Relief Valve Note: The package includes only the items listed above. Other accessories are not included. Note: Lighting effects and monitor settings may cause slight variations in the color appearance between the image and the actual item. Measurement may vary by up to +/- 1-3 cm.