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Thermo Relief Valve 1/2in MPT General Pump

Quick Overview

  • Protects the pump from damaging heat build-up while it is in bypass mode by releasing the water outside the pressure washer
  • The thermal relief valve, sensing a rise in temperature, opens and discharges a small amount of heated fluid
  • This allows cooler water to enter the system and cool the pump.
  • When the trigger gun is operated again then the cooler water that enters the pressure washer will cause the valve to close immediately

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Item #: 74-7224  UPC : 00669893044975  MPN : 100558

$8.20

$9.30

 
 
 In Stock
This is an obsolete Item

Thermal Relief Valve General Pump 1/2in npt

Protects the pressure washer pump from heat build-up damage while it is in bypass mode
When the operator is not spraying and no water is being released  the unloader will bypass the pump water back into the pump, prolonged bypass mode heats the water and this thermal relief valve will open to dump the heated water allowing cooler water to be drawn into the pump  
Brand: General Pump
Equipment Type: Pressure Washer
Temperature: 140° F.
Inlet: 1/2" Male Thread (NPT)

  • Protects the pump from damaging heat build-up while it is in bypass mode by releasing the water outside the pressure washer
  • The thermal relief valve, sensing a rise in temperature, opens and discharges a small amount of heated fluid
  • This allows cooler water to enter the system and cool the pump.
  • When the trigger gun is operated again then the cooler water that enters the pressure washer will cause the valve to close immediately



  • Proposition 65 requires businesses to provide warnings to Californians about significant exposures to chemicals that cause cancer, birth defects or other reproductive harm.  These chemicals can be in the products that Californians purchase, in their homes or workplaces, or that are released into the environment. By requiring that this information be provided, Proposition 65 enables Californians to make informed decisions about their exposures to these chemicals. Proposition 65 also prohibits California businesses from knowingly discharging significant amounts of listed chemicals into sources of drinking water. Proposition 65 requires California to publish a list of chemicals known to cause cancer, birth defects or other reproductive harm. This list, which must be updated at least once a year, has grown to include approximately 900 chemicals since it was first published in 1987. Proposition 65 became law in November 1986, when California voters approved it by a 63-37 percent margin.  The official name of Proposition 65 is the Safe Drinking Water and Toxic Enforcement Act of 1986.

    The list of chemicals contains a wide range of naturally occurring and synthetic chemicals that include additives or ingredients in pesticides, common household products, food, drugs, dyes, or solvents. Listed chemicals may also be used in manufacturing and construction, or they may be byproducts of chemical processes, such as motor vehicle exhaust.  For more information visit www.p65warnings.ca.gov/