General Pump Thermal Relief Valve 1/2" MPT 190°F – OEM Replacement Part

Part Number: 5920
Category: Pressure Washer Components → Thermal Relief Valves → General Pump Parts
Type: General Pump Thermal Relief Valve 1/2" MPT 190°F

The General Pump Thermal Relief Valve 1/2" MPT 190°F is a genuine OEM safety device designed to protect pressure washer pumps from damaging heat buildup during bypass operation. Engineered to automatically activate at approximately 190°F, this thermal relief valve senses rising water temperatures and releases a small amount of overheated water, allowing cooler incoming water to enter the system and reduce pump temperature.

Key Features & Benefits

• Genuine General Pump OEM Replacement Part
• Protects pumps from overheating during bypass operation
• Automatically activates at approximately 190°F
• Fast response to rising water temperatures
• Releases overheated water before pump damage occurs
• Allows cooler water to enter and reduce system temperature
• Helps protect seals, packings, valves, and internal components
• Consistent temperature activation range
• Compact design for easy installation
• Cost-effective preventative maintenance solution

Technical Specifications

Manufacturer: General Pump

Product Type: Thermal Relief Valve

Connection Size: 1/2" MPT

Connection Type: Male Pipe Thread (MPT)

Relief Temperature: 190°F

Hose Barb: 90° 1/4"

Weight: 1.5 oz

Application: Pump Overheat Protection

OEM Replacement: Yes

Typical Applications

• Pressure washer pumps
• Commercial pressure washer systems
• Industrial cleaning equipment
• Pump bypass loops
• Fleet washing equipment
• Agricultural cleaning systems
• Mobile pressure washing rigs
• High-flow pressure washer systems

Performance Advantages

• Prevents damaging heat buildup during bypass operation
• Extends pump seal and packing life
• Reduces maintenance costs and equipment downtime
• Protects internal pump components from thermal damage
• Provides one of the most consistent activation temperatures available
• Rapid response helps maintain safe operating conditions
• Supports long-term pump reliability and efficiency
• Easy installation in existing plumbing systems
• Ideal for preventative maintenance programs

Installation Locations

The General Pump Thermal Relief Valve can be installed in:

• Pump manifold ports
• Inlet water supply plumbing
• Bypass loop plumbing systems
• Pump protection circuits
• High-flow pressure washer installations

Always follow manufacturer recommendations regarding installation location and plumbing configuration.

Maintenance Recommendations

• Inspect the thermal relief valve regularly for leaks or signs of wear.
• Verify proper activation during routine maintenance intervals.
• Replace worn or malfunctioning valves immediately.
• Ensure adequate water supply to prevent excessive heat buildup.
• Follow General Pump installation and service procedures.
• Use only genuine OEM replacement parts to maintain factory performance and reliability.