The TOTO USA TSU83-A Fill Valve Assembly with RR0% is designed for reliable performance in TOTO toilets. This fill valve ensures a consistent water supply, optimizing the flushing process while minimizing water waste. Constructed from durable materials, it is built to withstand the rigors of daily use. The assembly is easy to install and compatible with various TOTO models, making it a versatile choice for toilet maintenance. With its efficient design, this fill valve helps maintain optimal water levels, ensuring your toilet operates smoothly and effectively.