Replace outdated, inefficient or broken fill valves with the industry's most relied on replacement fill valve. WDI's fill valves fix noisy and slow filling systems while being easy to install and adjust with a simple twist lock. The WDI smart toilet fill valve is designed to eliminate noise while preventing water waste with easy to adjust settings. The fill valve can adjust from 8 1/4 inch to 12 1/4 inch and fits most Kohler, Toto, American Standard and standard toilets.