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Fluidmaster’s 400A toilet fill valve is the #1 best selling fill valve in the world! This is an anti-siphon design-fill valve with adjustable height from 9″ to 14″. Replace your old style ballcock valve with this better performing Fluidmaster toilet fill valve. Fluidmaster invented the fill valve technology in 1958.

For best performance of your toilet, consider replacing the flapper along with the fill valve. To choose the right flapper, please view them atÌý.

• Replaces ballcocks
• Easy to install
• Height adjusts 9″-14″
• Refills quickly
• Universal fit for 1 and 2 piece toilets
• Corrosion-resistant material
• Anti-siphon operation, code approved
• Won’t contaminate fresh water supply