Pentair Fluidmaster Gray Autofill Valve (T40FG) matrix and this Balboa VL240 HJ81

and this Balboa VL240 HJ81 Overlay is designed for compatible Warm

Helps regulate spa air flow

The Magnum fit gives this part practical value because support hardware works best when they match the original pump relationship closely

The STK0035 is a practical replacement for compatible AquaCal AutoPilot systems that need renewed single-cell manifold support and cleaner plumbing performance

0kW heater in 115 volt and 230 volt applications using the 0602-221063-299 reference

Pentair Fluidmaster Gray Autofill Valve (T40FG) matrix and this Balboa VL240 HJ81For a clean repair, start with the correct part. Pentair Fluidmaster Gray Autofill Valve (T40FG) addresses a specific service point while preserving compatibility with the intended Pentair application. This gray Fluidmaster autofill valve helps automate pool water level replenishment, supporting steady fill operation when paired with a compatible autofill basin. It is useful when the existing component shows wear, damage, age related failure, or