Pentair Water Pressure Switch | MasterTemp / Max-E-Therm / ETi Heaters | 42001-0060S Spa Steps and results in sparkling clear

and results in sparkling clear water of the highest quality

prevents tearing during assembly

Both the LED light and its housing are fully waterproof with resin

Replacing it restores a watertight seal at the filter housing

Reducer adapters are size- and color-specific — the Dark Gray version (86204215) is not interchangeable with fittings of the same dimensions in other colors

Pentair Water Pressure Switch | MasterTemp / Max-E-Therm / ETi Heaters | 42001-0060S Spa Steps and results in sparkling clearThe Pentair Water Pressure Switch (42001 0060S) is the OEM replacement pressure switch for the MasterTemp, Max E Therm, and ETi series pool and spa heaters. This single component switch monitors water flow through the heater's water system and is a direct fit replacement for the original Pentair part. IMPORTANT: LICENSED PROFESSIONAL INSTALLATION REQUIRED Gas and electrical heater components must be serviced by a licensed pool professional or