Pentair Automatic Gas Shutoff Switch (AGS) | MasterTemp & Max-E-Therm Heaters | 42002-0025S C7470 and larger particles before they

and larger particles before they reach the pump

cross-reference the part number printed or molded on your existing union adapter body — PKG 188Z covers the 2-inch configuration for both the System 3 filter and MasterTemp heater lines

Chlorine Resistant: Specifically formulated to withstand the chemical balance of treated pool water

Pentair Part Number 178546Z Part Name Lid Compatible Filter Sizes 150 sq

Pentair Automatic Gas Shutoff Switch (AGS) | MasterTemp & Max-E-Therm Heaters | 42002-0025S C7470 and larger particles before theyThe Pentair Automatic Gas Shutoff Switch (AGS) (42002 0025S) is the OEM replacement safety switch for Pentair MasterTemp and Max E Therm pool and spa heaters. IMPORTANT: LICENSED PROFESSIONAL INSTALLATION 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. IMPORTANT: QUANTITY REQUIRED PER