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The Mi-T-M 22-0370 Pressure Washer Thermal Relief Valve 3/8G 145°F is a Pump & Pressure System valve designed to help protect compatible pressure washer pumps from excessive heat buildup caused by recirculating water during extended bypass operation.

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This part fixes the following symptoms:

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• Pump becomes unusually hot during operation.

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• Thermal relief valve leaks or discharges water.

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• Water remains overheated inside the pump.

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• Valve shows visible damage or corrosion.

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• Pump protection becomes unreliable during extended operation.

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Pump Overheating

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Quick Check: Check whether the pressure washer has been operating without sufficient water flow or with the trigger closed for an extended period.

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Fix Suggestion: Restore proper water circulation and inspect the thermal relief valve for correct operation and visible damage.

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Prevention Tip: Avoid leaving the pressure washer running with the spray gun trigger closed for prolonged periods.

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Thermal Relief Valve Discharges Water

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Quick Check: Observe whether water is released from the valve when pump temperature rises.

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Fix Suggestion: Allow the pump to cool and investigate restricted water circulation or abnormal heat conditions before condemning the valve.

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Prevention Tip: Maintain adequate water flow during pressure washer operation.

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Valve Leakage

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Quick Check: Inspect the 3/8G valve connection and valve body for persistent leakage when the pump is cool.

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Fix Suggestion: Check the connection and sealing area for damage or improper installation, replace the valve if it is physically damaged or fails to seal correctly.

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Prevention Tip: Inspect the valve and connection periodically for leakage or deterioration.

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Damaged Thermal Relief Valve

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Quick Check: Examine the valve body for cracking, corrosion, or other visible deterioration.

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Fix Suggestion: Replace the valve when physical damage or confirmed valve failure prevents reliable thermal protection.

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Prevention Tip: Keep the pump assembly clean and address leaks or overheating promptly.

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Customer Experience: Customers replacing a worn thermal relief valve often notice more dependable pump protection when proper water circulation and operating practices are maintained.

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\n Mi-t-m 22-0370 Pressure Washer Thermal Relief Valve 3/8G 145°F\n

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\n \n SKU:\n 22-0370\n \n \n \n Brand:\n \n \n\n
\n \n \n Mi-T-M\n \n \n
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Description

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\n Mi-T-M 22-0370 Pressure Washer Thermal Relief Valve is a 3/8’’G part which is used to prevent pressure washers from overheating it works through detecting the temperature of water and releasing hot water at 145°F to allow cooler water to flow through to avoid damage. The valve is frequently used in commercial and residential pressure washers to improve the durability and efficiency of the equipment. This is because the tool is compact and has a steady pressure and safe working capacity for long periods.\n
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