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How to Install Fluidmaster's 400A Toilet Fill Valve

To fix a noisy toilet, Fluidmaster® recommends using the 400A toilet fill valve in older, larger toilets, that date prior to 1994 with flush volumes between 3.5 and 7 gallons per flush. Fluidmaster®’s 400A Universal Toilet Fill Valve is the #1 best-selling fill valve in the world! This valve was originally introduced in 1975. To learn more about this product, please click here: 400A Toilet Fill Valve

To download our free guide to fix common toilet problems please click here: Fluidmaster Toilet Repair Guide