Fluid master fill valve, what is the best universal fill valve for my toilet?
The Fluidmaster 400A Toilet Tank Fill Valve is the number one selling fill valve in the world. The 400A is adjustable in height from 9 in. to 14 in. to fit almost all toilet tanks. It also has an anti-siphon design to prevent contamination of household drinking water. This is the product we use and highly recommend.