The Karcher Pressure Washer Thermal Relief Valve - 1/2" protects the pump from damaging heat build-up while it is in bypass mode. When the temperature rises to 145º, the relief valve opens and discharges a small amount of heated fluid. This allows cooler water to enter the system and cool the pump. When the gun is discharged the cooler water will cause the valve to close immediately.

Features/Specifications

• Inlet Thread Size: 1/2" MPT
• Trip Temperature: 145º F
• 1/4” hose barb
• Compact design
• Brass construction
• Fits easily into the pump manifold, inlet water supply, or bypass loop plumbing