UNIVERSAL COMPATIBILITY: Compatible with most modern and older toilets, offering adjustable height (8.66-12.20 inch) and water level range (5.91-9.45 inch), easily adapting to different models for convenient installation SILENT AND WATER-SAVING: Enjoy a quiet bathroom environment with an efficient filling valve that optimizes the water supply system while quickly filling the tank, reducing water bills EFFICIENT AND FAST WATER FILLING: Effectively enhance the overall performance of the toilet tank, solving issues such as slow filling, leaks, noise, and continuous running. Enjoy a quieter, faster, and more efficient user experience SELF-CLEANING DESIGN: Innovative self-cleaning feature resists hard water deposits and mineral buildup, reducing blockages and maintaining smooth water , eliminating the need for frequent cleaning LONG-LASTING DURABILITY: Made from high-quality material, it withstands various harsh water conditions, resists aging over long-term use, and reduces maintenance and replacement costs