Pentair Max-E-Therm/MasterTemp Thermistor (42001-0053S) mpindustries The Pentair American Products/PacFab Barrel

The Pentair American Products/PacFab Barrel Nut & Spring Assembly (53108900Z) is a replacement filter component for compatible pool and spa filtration equipment

The CMP generic weir is designed for compatible skimmer applications where a replacement weir door with a 7 inch width is needed

Threaded large-face directional scalloped design in gray and stainless

and easier long-term support

Engineered for durability

Pentair Max-E-Therm/MasterTemp Thermistor (42001-0053S) mpindustries The Pentair American Products/PacFab BarrelReplace a worn temperature sensing component with this thermistor for compatible Max E Therm and MasterTemp heaters. The thermistor helps the control system read water temperature so the heater can cycle properly and maintain the selected set point. A failing thermistor may cause inaccurate temperature readings, erratic heater operation, or diagnostic errors. This replacement is a practical option when testing confirms the sensor is out of range or