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The MCC POWERS 420 453 is a replacement wax motor kit designed for use with the Powers Hydroguard 420 series thermostatic mixing valve. The wax motor element is the thermal actuator at the heart of any thermostatic mixing valve, expanding and contracting in response to outlet water temperature to regulate the blend of hot and cold supply. When the wax motor wears or loses calibration, the valve can no longer maintain a safe, consistent delivery temperature. Replacing this kit restores proper thermostatic control and brings the valve back to OEM performance standards. This repair is performed by licensed plumbers and HVAC technicians.
This wax motor kit is intended for service and maintenance of the Powers Hydroguard 420 thermostatic mixing valve, commonly found in commercial and residential plumbing systems where scald protection and consistent hot water delivery temperature are required. Typical installations include point-of-use mixing applications in hospitals, schools, care facilities, and multi-family residential buildings. Installing a fresh wax motor element is standard practice during scheduled valve maintenance or when outlet temperature drift is observed.
Designed as a replacement wax motor kit for the Powers Hydroguard 420 series thermostatic mixing valve.
Installation should be performed by a licensed plumber familiar with thermostatic mixing valve service procedures. Shut off both the hot and cold water supply lines and relieve system pressure before disassembling the valve. Follow the valve manufacturer's service documentation for proper wax motor seating and reassembly sequence. After installation, verify outlet temperature with a calibrated thermometer before returning the valve to service.
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