Pentair NG to Propane Conversion Kit Model 300 | MasterTemp / Max-E-Therm | 460755 C7489 This spring check valve is

This spring check valve is listed as optional equipment for the PLM and PLD filter systems — it is not included as standard

providing the threaded interface that connects the pressure gauge to the filter tank

Inspect the lid O-ring at the same time

Also known as: C9485

Pentair NG to Propane Conversion Kit Model 300 | MasterTemp / Max-E-Therm | 460755 C7489 This spring check valve isThe Pentair NG to Propane Conversion Kit (460755) is the OEM replacement conversion kit for the MasterTemp and Max E Therm Model 300 pool heater allowing a natural gas unit to be reconfigured for liquid propane fuel supply. IMPORTANT: LICENSED PROFESSIONAL INSTALLATION REQUIRED GAS CONVERSION 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