Pentair Autofill, Gray | T40BG Natural Chemistry reducing maintenance time and preserving

reducing maintenance time and preserving heat efficiency

Listed size is 2 inch for proper replacement matching

Upgrade your spa or pool with the CG Air 9

Looking for a Jandy replacement part to restore Jandy Temperature Control

The part number 400-4000 describes a Union Fitting that connects two 1-1/2 in socket ends

Pentair Autofill, Gray | T40BG Natural Chemistry reducing maintenance time and preservingWhat This Part Is Used For The Pentair T40BG Autofill Gray maintains proper pool water level automatically. It compensates for evaporation through a mechanical float system. Why This Part Matters Consistent water level prevents suction issues and equipment strain. An autofill reduces manual filling and stabilizes operation. It supports reliable skimmer and pump performance. Key Features and Specifications Pentair manufacturer part number: T40BG