Thermal Relief Valve 1/2" MPT 150°F – OEM Replacement Part

Part Number: 20.0071
Category: Pressure Washer Components → Thermal Relief Valves → Pressure Washer Pump Protection Parts
Type: Thermal Relief Valve 1/2" MPT 150°F

The 20.0071 Thermal Relief Valve is a reliable OEM replacement thermal protection device designed to safeguard pressure washer pumps from damaging heat buildup during recirculation and bypass operation. Featuring a 1/2" Male National Pipe Thread (MNPT/MPT) connection and a 150°F activation temperature, this valve automatically opens when water temperature reaches the preset limit, releasing overheated water and allowing cooler water to enter the system.

Key Features & Benefits

• OEM replacement thermal relief valve
• Protects pressure washer pumps from overheating
• Automatically opens at approximately 150°F
• Automatic reset operation after cooling
• Releases overheated water during bypass operation
• Helps prevent seal, packing, and valve damage
• Extends pump service life
• Easy installation with 1/2" MPT connection
• Reliable thermal protection for pressure washer systems
• Ideal for preventative maintenance and pump protection

Technical Specifications

Manufacturer Part Number: 20.0071

Product Type: Thermal Relief Valve

Connection Size: 1/2" MPT

Thread Type: Male National Pipe Thread (MNPT)

Opening Temperature: 150°F

Reset Type: Automatic Reset

Application: Pump Overheat Protection

OEM Replacement: Yes

Typical Applications

• Pressure washer pumps
• Commercial pressure washer systems
• Industrial cleaning equipment
• Pump recirculation loops
• Pump bypass systems
• Equipment wash stations
• Mobile pressure washing rigs
• Pump protection circuits

Performance Advantages

• Prevents damaging heat buildup during bypass operation
• Protects internal pump components from thermal failure
• Extends seal, packing, and valve life
• Reduces maintenance expenses and equipment downtime
• Automatically resets after cooling
• Supports safe and reliable pressure washer operation
• Improves overall pump longevity
• Easy integration into existing systems
• Ideal for commercial and industrial cleaning applications

Installation Locations

The 20.0071 Thermal Relief Valve can be installed in:

• Pump manifold ports
• Bypass loop plumbing
• Recirculation systems
• Pump protection circuits
• Inlet water plumbing assemblies

Always follow equipment manufacturer recommendations regarding installation location and system configuration.

Maintenance Recommendations

• Inspect the thermal relief valve regularly for leaks or physical damage.
• Verify proper activation and reset operation during maintenance intervals.
• Replace worn or malfunctioning valves immediately.
• Ensure adequate water supply to prevent excessive heat buildup.
• Follow manufacturer installation guidelines.
• Inspect pumps periodically for signs of overheating or bypass-related wear.