How to Remove a Faulty Toilet Flush Valve

What You'll Need
Adjustable wrench
Replacement toilet flush valve

A toilet that runs constantly may be in need of a new toilet flush valve. The toilet flush valve controls the flow of water in the toilet when you flush it. It is a simple device that regulates water level and makes sure that the bowl empties and is restored with water. When it is working properly it will shut off automatically. When it is not working properly, you will here a constant running or flushing sound emanating from the toilet. When this occurs you will need to replace the toilet flush valve immediately in order to cut down on the amount of water that is being wasted.

Instead of calling a plumber and spending the money to have them replace the toilet flush valve, this article will provide you with the steps necessary to complete this repair. Any do-it-yourselfer with a set of pliers or an adjustable wrench can repair a faulty flush valve.

Step 1: Purchase the Materials for the Replacement of the Toilet Flush Valve

Go to any hardware store, department store or home improvement center to purchase a toilet flush valve. You should look for a universal type toilet flush valve as a replacement for your existing flush valve. More than likely if the toilet flush valve has never been changed it will have a large ball attachment that acts as the regulator when the toilet is flushed. These types of toilet flush valves have been replaced by models that are a single cylinder unit that shuts off when the water reaches a certain level inside the bowl.

Step 2: Shut Off the Toilet

Turn off the toilet in order to replace the faulty valve. In order to do this you need to turn the water supply valve off and flush the toilet. The valve should be underneath the toilet. Turn this valve counter clockwise in order to close off any new water being supplied to the toilet. Once it is turned off, flush the toilet. When the toilet drains, no new water will come into the bowl.

Step 3: Remove the Old Toilet Flush Valve

Place towels underneath the area where the screw holding the toilet valve in place is located, usually on the left side of the toilet near the water supply valve. A pair of pliers or adjustable wrench should be enough to turn the screw. Do not apply too much pressure since this screw is typically plastic. Too much pressure will cause the screw to break or strip, making it difficult to remove.

With the screw remove, unhinge the chain that goes to the bowl float and take the assembly out of the toilet.

Step 4: Place the Replacement Toilet Flush Valve in the Toilet

With the old flush valve removed, place the replacement flush valve in its place. The universal types will go right where the old toilet flush valve was. Tighten the replacement flush valve with the screw nut provided and also attach the float chain. Turn the toilet back on and it should be working as normal.