528z Waterwise Fill Valve, Adjustable 7-3/4 To 13-1/2 In.

The Korky 528Z WaterWISE Fill Valve is a dual shut-off fill valve designed to minimize water loss and reduce costly water bills by detecting toilet flapper leaks and hang-ups. This innovative valve saves water during slow flapper leaks by preventing unnecessary tank refilling and automatically shuts off if the flapper becomes stuck open. It replaces outdated ballcock technology with modern, reliable performance.

Whether your toilet runs constantly, refills slowly, has weak flush pressure, or makes noise, this fill valve addresses these common problems with built-in leak detection. The adjustable design fits both large and small toilet tanks, making it a versatile replacement for most standard toilet models. Installation is straightforward with the included components and instructions, and the valve operates noticeably quieter than comparable fill valves.

Features and Benefits

• Dual Shut-Off Technology: Detects flapper leaks and hang-ups, preventing water waste and keeping your water bills low.
• Adjustable Height: Ranges from 7-3/4 to 13-1/2 inches, accommodating both large and small toilet tanks with a twist-lock adjustment mechanism.
• Quieter Operation: Proven to be quieter than other fill valves on the market.
• Anti-Siphon Protection: Yes, includes built-in anti-siphon capability.
• Easy Installation: Twist-lock adjustment for secure setup, with all necessary mounting hardware included.
• Long Warranty: Backed by a 5-year manufacturer warranty for peace of mind.

Specifications

• Brand: Korky
• Model: 528Z
• Adjustment Range: 7-3/4 to 13-1/2 inches
• Material: TPE body
• Anti-Siphon: Yes
• Warranty: 5 years
• Made in the USA
• Includes: Fill valve, refill tube, metal refill tube clip, mounting nut, cone washer, coupling nut, tamper proof key, and instructions