The General Pump 100558 Thermal Relief Valve is a compact, high-performance safety device designed to protect pressure washer and softwash systems from overheating. This thermal relief valve automatically opens at 145°F, allowing hot water to discharge and preventing damage to pumps and hoses.

Includes:

• One (1) thermal relief valve

• 1/2″ Male NPT threaded inlet

• Compact body design for tight installations

Performance Specifications:

• Size: 1/2″ MPT (Male Pipe Thread)

• Activation Temperature: 145°F (62.8°C)

• Material: Brass body with internal stainless and high-temp components

• Model Number: 100558

• Brand: General Pump

• Discharge Type: Poppet-style, automatic reset

• Application: Pressure washer pumps, softwash pumps, or high-temp rinse systems

Key Benefits:

• Protects pump systems from heat-related damage during bypass or extended idle

• Automatically resets after cooling, no manual reset required

• Compact size fits directly into pump manifold or discharge line

• Rugged construction withstands demanding field environments

• Easy to install on most 1/2″ MPT-compatible pumps or tees