Pentair UltraTemp Defrost Sensor Probe Thermistor (473665Z) divertorvalves and this Perma Cast version

and this Perma Cast version is an 8 inch bronze channel supplied with the PS-4019-BC component using the PC-4008-BC reference

Filter cartridge for compatible applications using FC-2394

Useful when the original cartridge is worn or no longer filtering effectively

Light-duty flow switches like this are useful in control applications where accurate flow verification matters more than heavy switching capacity

Useful when the original cover components are damaged or missing

Pentair UltraTemp Defrost Sensor Probe Thermistor (473665Z) divertorvalves and this Perma Cast versionThis defrost sensor probe thermistor is used in compatible Pentair UltraTemp heat pumps to monitor temperature conditions related to defrost control. Accurate sensor feedback helps the system determine when frost management is needed and supports proper heat pump operation in cooler or humid conditions. A failed or inaccurate thermistor can contribute to error codes, poor heating performance, or improper defrost behavior. Replacing the sensor is a