Fluidmaster® 400CAR3P5 PerforMAX® High Performance Toilet Fill Valve, 2-PieceThe Fluidmaster PerforMAX toilet fill valve is the quietest and most powerful fill valve on the market. It allows you to optimize fill performance, while saving water and money. The PerforMAX was designed to have a universal fit, allowing it to work with all toilet brands including Kohler, Toto and American Standard. Most powerful toilet fill valve on the market Optimizes performance while saving water and money Helps prevent excessive or inadequate