The Fluidmaster 400A Universal Toilet Fill Valve is the top-selling fill valve worldwide. Offering quiet refill rates it is also a top solution to fix noisy toilets. Now featuring an enlarged easier to turn adjustment dial, and a pre-installed shank washer for even faster install. The universal design ensures it will fit most toilet models, with an adjustable EZ-twist height from 9″ to 14″. The 400A offers quick refill rates and replaces ballcocks and other toilet fill valves. Trusted, proven 400A fill valve is built to last from corrosion-resistant materials for a long lifespan and featuring a 5 year warranty. This anti-siphon design, won’t contaminate the fresh water supply and meets code approvals for: CSA (Canadian Standards Association), UPC (Uniform Plumbing Code), and ASSE (American Society of Safety Engineers). For a fast upgrade to your toilet tank fill valve, choose Fluidmaster’s 400A Universal Fill Valve. Recommended for 3.5 to 7 GPF toilets pre-1994.