Pentair Autofill with Fluidmaster Valve, Dark Gray | T40FDG PresAir This kit includes a 1

This kit includes a 1 gallon container and a 1 quart container of primer to support complete coverage on typical pool surfaces

This part is replaced to restore proper filtration and pump performance

Proper traction helps the cleaner move across pool floors and walls

Flow is reduced because the basket is damaged or collapsed

Designed for professional service use and in-ground pool protection

Pentair Autofill with Fluidmaster Valve, Dark Gray | T40FDG PresAir This kit includes a 1What 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