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FOR SPA AND HOT TUB SANITIZATION
Confirm you have this screw on hand before beginning service
Brand Equipment Line Model / Part Number Notes Pentair Stainless Steel Niches Small Stainless Steel Niche Sealing ring for small stainless steel niche Compatibility is based on Pentair parts documentation and available OEM records
measure your existing cartridge's length and outer diameter against the specs above — 12 1/2" length and 5 3/16" OD are the key fit dimensions for the 5CH-502
Pentair Air Flow Switch | MasterTemp & Max-E-Therm Pool Heaters | 42001-0061S C8316 FOR SPA AND HOT TUBThe Pentair Air Flow Switch (42001 0061S) is the OEM replacement air flow switch for Pentair MasterTemp and Pentair (formerly Sta Rite) Max E Therm pool heaters. IMPORTANT: HEATER COMPONENT LICENSED TECHNICIAN REQUIRED Gas and electrical heater components must be serviced by a licensed pool professional or qualified HVAC technician. Do not attempt to service gas or high voltage components without proper certification. The air flow switch monitors
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