General Pump 100680 Thermal Relief Valve – 1/2" MPT, 190°F for Pressure Washers

General Pump 100680 Thermal Relief Valve – 1/2" MPT, 190°F for Pressure Washers

Protect your pressure washer pump from excessive heat with the General Pump 100680 Thermal Relief Valve. Featuring a 1/2" Male NPT connection and a 190°F temperature rating, this valve provides automatic protection against excessively hot water within the pump and bypass system.

When water temperature reaches the valve's operating point, the thermal relief valve opens to discharge hot water, allowing cooler incoming water to enter the pump and helping prevent heat-related damage.

Specifications:

• Brand: General Pump

• Part Number: 100680

• Type: Thermal Relief Valve

• Inlet: 1/2" Male NPT

• Maximum Temperature: 190°F

Applications:

• Hot water pressure washers

• Cold water pressure washers

• Commercial cleaning equipment

• Pressure washer pump systems

• Unloader bypass systems

Features:

• 190°F temperature rating

• 1/2" Male NPT connection

• Automatically relieves excessively hot water

• Helps protect pump seals, packings, and O-rings

• Helps reduce heat-related pump damage

• Automatic operation requires no adjustment

• Genuine General Pump component

What it does:

When a pressure washer operates with the trigger gun closed, the unloader may place the pump into bypass and recirculate water. If the machine remains in bypass too long, the recirculating water can become extremely hot.

The thermal relief valve provides an additional layer of protection by opening when the water reaches its specified temperature. Hot water is discharged, allowing cooler water to enter the pump and reduce the internal temperature.

Why it matters:

Excessive pump temperature can contribute to:

• Damaged seals and O-rings

• Premature packing wear

• Water leaks

• Reduced pump life

• Costly pump repairs

• Unnecessary equipment downtime

A thermal relief valve is a small and inexpensive component that can help prevent much more expensive pressure washer pump damage.

Important:

This 190°F model has a higher temperature rating than common 145°F thermal relief valves. Always match the replacement valve's connection size and temperature rating to the requirements of your equipment.

The General Pump 100680 Thermal Relief Valve is a dependable replacement for pressure washer systems requiring a 1/2" MPT connection and 190°F temperature rating.

Not sure whether your machine requires a 145°F or 190°F thermal relief valve? Reach out—we'll help you get the right part the first time.