A Guide to Changing Your Toilet Flapper and Valve

Does your toilet seem to run constantly? The problem could be a worn flapper or a defective toilet fill valve. While it’s usually best to contact reliable plumbers in Duncanville, TX, to fix plumbing issues, it might be helpful to learn how to change toilet fill valve and flapper components so that you can understand the process.

Consult our guide below for a step-by-step overview of changing out your toilet fill valves and flappers.

Replacing Toilet Fill Valves and Flappers: Your Complete Guide From Plumbers in Duncanville, Texas

When flappers and toilet fill valves deteriorate or malfunction, they can cause more than just an extra noisy toilet. Expect water wastage and higher utility bills. In fact, some faulty valves can also cause the toilet to leak, increasing the risk of water damage in your bathroom.

Knowing how to change toilet fill valve and flapper components might help pinpoint when it’s time to address the plumbing’s performance and conserve water. Here’s what our plumbers in Duncanville do:

1. Turn Off the Water Supply Valve

The first step in replacing your fill valve is to turn off the water supply valve to the tank. This component sits behind the toilet under the tank.

Turn it clockwise to prevent the tank from refilling with water while you work, then flush your toilet to empty its water. There may be a small amount of water left inside the tank. You could use a towel, sponge, or wet vac to remove it.

2. Remove the Broken Fill Valve

The fill valve is inside the toilet tank. It’s the tall, cylinder-like component that sits to one side of the tank that connects to the water supply line.

To remove it, loosen the tank bolts underneath the tank using pliers or an adjustable wrench. Drain the hose into a bucket or onto a thick towel.

3. Insert and Adjust the New Valve

Knowing how to change toilet fill valve and flapper components includes knowing what to buy. Ideally, you should purchase the valve that matches your old component. However, newer models are universal, allowing them to work in nearly any toilet in Duncanville.

Older models may have a specific valve type, such as:

• Ballcock fill valves: This air-filled plastic ball or cup regulates water flow inside the tank.
• Piston fill valves: This brass cup with a rubber lip separates the two voids inside the valve.
• Floatless fill valves: This pressure-sensing component controls water flow, acting like the seal or ball in the other types of valves.

Once you have the new component, insert its stem into the hole at the bottom of the tank. The top of the valve should be approximately one inch below the top of the overflow tube. Adjust the height of the fill valve to match.

4. Slide Washers Onto the New Valve Stem

Does your new equipment include washers for the fill valve stem? Attach them according to the manufacturer’s instructions. The washers ensure a watertight seal.

5. Disconnect the Flapper’s Lift Chain

It’s a good idea to replace your flush mechanism when replacing a toilet fill valve. The flapper is a rubber disc that lifts the chain whenever you flush so that the water in the tank empties through the flapper.

If you know how to change toilet fill valve and flapper components, removing a deteriorating flapper is easy. Unhook the lift chain connected to the flush lever and flapper inside the tank. Pull the old flapper up from its pivot arm on the overflow tube.

The process requires a temporary water shutoff and an empty toilet.

6. Position and Install the New Flapper

Next, wipe the seal on the valve seat to minimize the risk of a water leak. Then, line up the new flapper on the overflow tube’s pegs. Connect the chain to it and the flush level.

7. Restore the Water Supply and Refill Your Toilet Tank

Once everything is in place, turn on the water supply valve. Check all of your connections. Leaks mean something isn’t lining up.