A toilet that won’t stop running is often mistaken for a leak into the bowl long after flushing. In some instances, the tank will fill, pause, and then start up again, while other times the water simply never shuts off.
When Brittney’s husband took the lid off the tank to address the issue, he focused on a specific component: the fill valve. This part regulates the flow of water into the toilet, and if it is worn out or defective, it can lead to issues with the filling process, water flow, and noise.
Installing a replacement does not require removing the fixture; it only involves access to the interior of the tank and the area beneath it.
Replacing the Fill Valve
The first step is to turn off the water supply and flush the toilet to empty the tank, preventing it from refilling.
Although the tank should be empty, residual moisture will likely remain at the bottom. Therefore, placing a bucket underneath is a critical precaution before disconnecting any lines to catch this remaining water.
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Locate the hose connecting the water supply to the tank and unscrew it to disconnect the line, ensuring the bucket catches any drips.
Removing the Old Valve
The fill valve is secured to the tank bottom by a mounting nut, washer, and O-ring. These should be removed before attempting to remove the valve, and a crescent wrench may be necessary if the nut is too tight to turn by hand.
Once the hardware is removed, the valve can be lifted out of the tank. As it frees itself, water trapped around the valve will drain out, which is why the bucket must remain in place.
This action creates an opening in the tank’s base where the new valve will be inserted. It is important that the new part is positioned correctly to match the tank’s intended water level.
Installing the New Valve
Before securing the new unit, the refill tube must be attached. Since valve designs vary, the connection method depends on the specific model. In this case, the tube pushes onto the valve’s opening to create a secure fit.
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Place the new valve inside the tank and align it with the water-fill line marked on the tank. For this specific model, the valve extends or retracts until the corner of its top cover aligns with that line. Once the proper height is achieved, the valve locks in place.
Tighten the mounting nut from beneath the tank, but use only your hands to ensure a proper grip, as using a wrench could crack the valve.
A clip is used to secure the refill tube to the top of the flush valve at its intended destination. If the tube is excessively long, cut it rather than forcing it into a sharp bend.
To verify the repair, reconnect the supply line under the tank and turn the water back on. Let the tank fill completely, then flush multiple times. Inspect for leaks at the supply connection, check for water escaping from the refill tube, and confirm the tank stops filling at the correct level.
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