678169004 Thermal Relief  Valve

• 1/2" across threads

• Discharges at 140°

• Helps protects pump from overheating

The 678169004 Thermal Relief Valve is an OEM replacement part designed for safety in certain pressure washers, including Ridgid, Ryobi, Homelite, and Husky models. Its role is to release water and pressure from the pump if it continues to circulate without being discharged, preventing damage to the pump.

• Should be replaced every 2 years to ensure proper operation