Replace your toilet's fill valve with options from the collection at F.W. Webb. Explore a selection of top-quality toilet and tank fill valves and ballcocks; sort your choices by size, material, width, length, and height to find parts that work with your existing toilet. Select a fill valve from the most trusted makers, including Fluidmaster and American Standard, to keep your toilet functioning properly.
A fill valve is the part in a toilet that gauges the water in the tank and helps refill it to the proper level after each flush.
A ballcock uses a float that opens the fill valve when the toilet is flushed, then closes it when the water returns to the appropriate level in the tank.
