TOTO Replacement Flapper for 3-Inch Flush Valve Tanks – THU500S

Overview

The TOTO Replacement Flapper THU500S is designed for select 3-inch flush valve tanks, offering a flexible retrofit option that can adapt to a variety of TOTO configurations. Its durable polypropylene body pairs with a rubber sealing surface to help establish a reliable seal where the tank meets the flush valve. The flapper arrives with a chain and model-specific setup instructions, making it easier to tailor the fit to your exact tank model without extensive plumbing work.

Compatibility and Design

This 3-inch replacement is crafted to suit a range of TOTO tanks and can replace numerous THU parts including THU138S, THU175S, THU331S, THU140S, THU299S, THU253S, THU277S, THU347S, THU275S, THU332S, THU369S, and THU499S. The combination of a robust polypropylene body and a flexible rubber sealing surface is designed to promote a solid contact with the valve seat, while maintaining a compact, easy-to-handle profile for everyday bathroom use.

The included chain helps keep the flapper connected to the flush lever, reducing the chance of misalignment during operation. The setup instructions are tailored to different TOTO tank models to support a smoother install experience even for first-time replacements.

What’s Inside

• 3-Inch replacement flapper body
• Rubber sealing surface for a snug seal
• Chain attached for straightforward hookup
• Model-specific setup instructions

Benefits and Use Scenarios

• Flexible compatibility fits multiple TOTO 3-inch tanks, reducing the need for multiple replacements
• Durable polypropylene body paired with a rubber seal for long-term use
• Chain and model-specific guidance simplify installation across different tank configurations
• Accessible replacement option to restore flush performance with minimal tools and downtime

Installation Tips

Before replacing, shut off the water supply and drain the tank. Align the flapper’s sealing surface with the valve seat, connect the chain to the flush lever, and follow the included model-specific instructions for a proper fit. After installation, test the refill and inspect for leaks to confirm the seal is seated correctly.

Choosing this THU500S replacement may help sustain a dependable flush cycle in busy bathrooms while preserving the original tank design. It’s a practical upgrade for homeowners or maintenance pros seeking a versatile, straightforward solution that respects TOTO’s engineering standards.