Korky QuietFILL Toilet Fill Valve (Model 528MP)

The Korky QuietFILL Toilet Fill Valve is a universal, ultra-quiet replacement designed to restore smooth, efficient flushing on 1.6 GPF (HET) and older toilets. Engineered with an internal float and sediment-trapping strainer, it prevents running, noisy refills and weak flushes by delivering just the right amount of water to the bowl. Its innovative one-step twist-lock adjustment lets you set the valve height from 7 ¾″ to 13 ½″ in seconds—no tools required.

Installation is fast and tool-free: remove your old valve or ballcock, drop in the new QuietFILL 528MP, secure it with the included mounting nut and washer, connect the refill tube, then fine-tune the bowl refill level with the refill adjuster. The complete kit includes the fill valve, refill tube, metal clip, cone washer, coupling nut, tamper-proof key and step-by-step instructions.

Key Features

• Universal fit: replaces most two-piece toilets and many one-piece models, including Kohler, TOTO and American Standard
• Fits 99% of toilets—standard and extra-tall tanks
• QuietFILL technology: proven quietest in lab testing
• Fixes running, noisy, no/slow refill and weak-flush issues
• One-step height adjustment from 7 ¾″ to 13 ½″—no tools needed
• Internal strainer prevents sediment from clogging the valve
• Includes everything needed for a complete valve swap
• Made in the USA