Pentair T40FNW Autofill - Fieldmaster Very White, T40FNW

What This Part Is Used For
The Pentair T40FNW Autofill Fieldmaster Very White maintains consistent pool or spa water level automatically. It replaces water lost through evaporation and splash-out.

Why This Part Matters
Proper water level prevents skimmer air leaks and pump cavitation. An autofill reduces manual hose filling and stabilizes water balance. Consistent levels help protect equipment during heavy summer use.

Key Features and Specifications

• Pentair manufacturer part number: T40FNW
• Autofill Assembly
• Fieldmaster Very White finish
• For pool and spa applications
• Automatic water level regulation

Installation and Fitment Guidance
Install in an approved autofill housing and connect to regulated water supply. Verify deck compatibility before installation. Confirm by manufacturer part number before ordering.

About the Pentair Brand
Pentair designs pool plumbing and control systems used across the industry. Their autofill components are integrated into many residential builds. Pentair replacement parts support proper fit and system reliability. Service technicians trust Pentair for compatibility across equipment pads.

Common Service Context
Often installed during pool remodels or when upgrading manual fill systems. Commonly replaced when float valves stick or leak.