Pentair Autofill with Fluidmaster Valve, Dark Gray | T40FDG PresAir emphasizing durability and long service

emphasizing durability and long service life in demanding water-care applications

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Pentair Autofill with Fluidmaster Valve, Dark Gray | T40FDG PresAir emphasizing durability and long serviceWhat This Part Is Used For The Pentair T40FG Autofill with Fluidmaster Valve Dark Gray maintains consistent pool water level. It automatically replaces evaporated water through a controlled valve system. Why This Part Matters Proper water level protects pumps from air lock and cavitation. An autofill minimizes manual maintenance and stabilizes system performance. It also helps maintain consistent waterline appearance. Key Features and Specifications