Pentair Automatic Water Filler [White] [Side Mount Float Valve] (T40BW) airblowers Helps maintain secure closure

Helps maintain secure closure

A rectangular DE grid helps form the working filtration surface inside a compatible diatomaceous earth filter system

1 to 6 PSI range

That combination matters because the best heater replacements restore both physical fit and thermal confidence in one complete repair

Pentair Automatic Water Filler [White] [Side Mount Float Valve] (T40BW) airblowers Helps maintain secure closureThe Pentair Automatic Water Filler in White with Side Mount Float Valve (T40BW) is designed to help maintain pool water level automatically in compatible installations. Automatic water fillers reduce the need for manual refilling by adding water when the level drops, helping keep the pool, skimmer, and circulation system operating more consistently. This white side mount float valve model is intended for applications where Pentair part T40BW is