Replacing a Toilet's Riser Tube

What You'll Need
New riser tube
Steel wool
Teflon plumbers tape

The water supply hose to a toilet is usually called the toilet riser tube. This tube is what connects the house water supply to the toilet cistern or tank. The tube is connected by a metal hex shaped coupling to a valve. The end that attaches to the underside of the toilet tank is a plastic tube. Due to wear and tear, the riser tube will sometimes spring a leak. If this happens, you will want to replace it as soon as you can so you don’t accumulate some very costly water damage. You can do this job yourself and save a lot of money and save on possible water damage that could have been caused by the water if it kept leaking. The toilet is one of the most used fixtures in the home, so keeping it running and in good condition is essential. Replacing a leaky riser tube is an easy way to keep things running well. Here are a few things that will help you with this job.

Step 1 - Preparations

The first thing you should do is shut the water off to the toilet. Locate the riser tube and follow it until you find the shut off valve to turn the water off.

Step 2 - Drain the Tank

Take the lid off of the toilet tank and set it aside. You will have to drain the tank by flushing the toilet and holding the handle down. This will allow most of the water to drain from the tank. Place a bucket under the toilet to catch any water you can't get to drain out. Use the towel to dry out the tank if you wish.

Step 3 - Changing the Tube

Ring out the towel and place it under the toilet tank to catch any water. Use the pliers to unscrew the coupling. The coupling can be located at the back of the toilet up towards the tank.

Step 4 - Removing the Nut from the Supply Valve

The next thing you will need to do is to use the wrench and locate the nut on the water supply valve. It will need to be unscrewed and removed.

Step 5 - Cleaning the Threads

Clean the threads on the supply valve with a steel wool pad. Do the same thing to the inlet to the tank. Remove any rust, hard water deposits or dirt. Wipe clean with a rag and then wrap the threads with plumbers tape. They are now ready to be reconnected.

Step 6 - Connecting the Coupling

Take the new riser tube and connect the coupling and then reconnect it to the supply valve. The other end then can be connected to the tank.

Step 7 - Finishing Up

Now that the riser tube is reconnected, you can put the lid back on and turn the water on to the toilet. Wait for the toilet to fill and then flush it to see if there are any leaks or drips.