Water tank replacement accessories with a 3 Inch ABS flush valve assembly - Size options: choose from 17 cm (6.69 in), 21 cm (8.26 in), or 27.5 cm (10.82 in) height. Connector diameter: 8.1 cm (excluding seal) or 10.8 cm (including seal). Inlet hole diameter is a universal 20 mm (0.78 in). Suitable for ceramic 3 inch large drain holes sizes about 8.2–9.4 cm (3.22–3.70 in). - Good replacement and leak prevention: dual flush valve kit regulates water use in the tank. When the tank is half drained, a rubber seal at the bottom provides a good seal to prevent leaks. If your toilet is leaking, replacing the control valve is a solid option. - Installation guidance: 3 Inch ABS flush valve assembly fits most one-piece toilets. Before installing, measure the water tank height, drain hole diameter, and water inlet hole diameter. Easy to install by hand. Note: please refer to the size photos for details. The control is not suitable for split toilets. - Material and performance: made of high-quality ABS and metal, with good hardness for durability. The control valve delivers high flushing efficiency and strong flush power for a longer-lasting, reliable flush. - Use scenarios: - You have a leaking toilet due to a worn control valve and need a straightforward replacement. - You want to convert or upgrade to a dual flush system to optimize water use. - You’re installing into a ceramic 3 inch drain setup with drain holes in the 8.2–9.4 cm range and need a compatible, easy-install valve.