Oatey K835-79 Universal Adjustable Flush Valve 2 in

Product Description

The OATEY K835-79 is a universal adjustable flush valve designed for use in residential toilet tanks. The valve adjusts from 10 inches to 15 inches to accommodate a range of tank depths, eliminating the need to source a fixed-height replacement. It ships complete with a flapper, chain, hook, gasket, and locknut, so a full valve replacement can be completed without additional parts. The no-cut design means the valve installs without trimming or cutting the overflow tube. Plumbers and experienced DIYers use this part for routine flush valve replacements and toilet rebuild kits.

This flush valve fits standard 2-inch toilet tank openings and is suited for residential toilet repair and maintenance. The adjustable height range makes it broadly compatible with a wide variety of tank configurations, reducing the need to stock multiple fixed-height valves. It is commonly installed during full tank rebuilds or when the original flush valve is worn, cracked, or leaking at the seat.

Key Features

• Adjustable height from 10 inches to 15 inches to fit varied tank depths
• Universal 2-inch design for standard residential toilet tanks
• Includes flapper, chain, hook, gasket, and locknut for a complete replacement kit
• No-cut overflow tube design simplifies installation
• Single assembly replaces fixed-height valves across a broad range of tank styles

Compatibility

Designed as an OEM-style replacement flush valve for standard 2-inch residential toilet tank applications.

Installation Notes

Shut off the water supply at the angle stop and flush the toilet to empty the tank before beginning work. This part is typically installed by a licensed plumber or experienced DIYer following IPC guidelines for fixture repair. Use the included gasket and locknut to secure the valve to the tank; do not overtighten the locknut as this may crack the tank. Confirm the flapper seats properly and the chain has minimal slack before restoring water supply and testing flush operation.