Description Toto Adjustable Toilet Fill Valve Toto Adjustable Water Height Fill Valve Toto fill valve is a universal fit for 1 and 2 piece toilets that are bottom water fed with a 7/8 inch pipe connection. Toto fill valve replaces the ballcock mechanism Adjustable water height toilet fill valve (8 inch -13 inch Height) Unboxing the NuFlush Tower Fill Valve Replacement for American Style Bottom Water Fed Toilets