Autotrol (1031391) Timer Locking Pin 500 Gal. Polyphosphate/GAC Carbon Scale/Corrosion Inhibitor & Chlorine Removal Filter Prevents scale damage and corrosion

Prevents scale damage and corrosion that cause costly repairs

The ISO-WH1-20B is purpose-built for larger homes and applications where standard compact whole house filters create bottlenecks

5" all-phosphate scale inhibitor designed to protect your plumbing

3-Digit LCD

Autotrol (1031391) Timer Locking Pin 500 Gal. Polyphosphate/GAC Carbon Scale/Corrosion Inhibitor & Chlorine Removal Filter Prevents scale damage and corrosionAutotrol Control Valve Component Autotrol 1031391 Timer Locking Pin Precision replacement part for secure timer assembly in Autotrol control valves OEM Autotrol Part Direct Fit Replacement Essential Timer Component The Autotrol 1031391 Timer Locking Pin is a critical component for securing the timer assembly in Autotrol control valves. This OEM replacement part ensures proper timer function and prevents drift or misalignment during regeneration