Pentair Automatic Water Filler [White] [Side Mount Float Valve] (T40BW) airblowers this Waterway gray skimmer lid

this Waterway gray skimmer lid is a practical replacement when the original lid needs to be renewed

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

Air injectors like this help bring air into the spa plumbing system to create the bubbling

1 to 6 PSI range

Pentair Automatic Water Filler [White] [Side Mount Float Valve] (T40BW) airblowers this Waterway gray skimmer lidThe 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