Pentair Water Pressure Switch | MasterTemp / Max-E-Therm / ETi Heaters | 42001-0060S Spa Steps Reducer adapters are size- and

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

A cracked or worn diffuser causes pressure loss and reduced pump efficiency — this direct-fit OEM replacement restores factory performance

Corrosion-resistant plastic housing

and results in sparkling clear water of the highest quality

Pentair Water Pressure Switch | MasterTemp / Max-E-Therm / ETi Heaters | 42001-0060S Spa Steps Reducer adapters are size- andThe 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