Oatey K835-90 Adjustable Toilet Flapper 3 Inch

Product Description

The OATEY K835-90 is a 3-inch adjustable toilet flapper designed for residential toilet flush valve service. The flapper features a top-mounted adjustment dial that allows the installer to increase flushing power, reduce water consumption, or dial in a balance between the two without removing the flapper from the seat. It is constructed from chloramine-resistant material, which resists degradation from chloramine-treated municipal water supplies. A built-in chain guard keeps the chain from catching under the flapper seal, preventing slow leaks and wasted water. This part is typically installed by plumbers or experienced DIYers during routine toilet maintenance or leak repair.

The K835-90 is suited for residential toilet flush valves with a 3-inch seat diameter. The easy-adjust arms are designed for universal fitment across a wide range of toilet tanks, simplifying installation without special tools. The adjustable flush volume feature makes it a practical choice when water conservation is a priority or when restoring flush performance in older tank toilets.

Key Features

• Top-mounted adjustment dial for fine-tuning flush volume without removal
• Chloramine-resistant material with a 5-year manufacturer guarantee
• Built-in chain guard prevents chain from lodging under the seal
• Easy-adjust arms simplify installation and broaden universal fitment
• 3-inch seat size covers common residential flush valve configurations

Compatibility

Designed as a universal-style replacement flapper for residential toilet flush valves with a 3-inch seat diameter. Easy-adjust arms support fitment across a broad range of tank toilet models.

Installation Notes

Shut off the toilet supply valve and flush the tank to drain before beginning work. Disconnect the existing flapper chain from the flush handle arm and remove the old flapper from the overflow tube ears. Snap the new K835-90 flapper onto the overflow tube, reconnect the chain with minimal slack, and adjust the dial to the desired flush setting before returning the system to service. Plumbers should verify the seat diameter before installation to confirm fitment.