The shut off valve is usually connected to a pipe that goes from the wall or floor and into the valve. From there, a gray braided cable protrudes from the top of the valve into the toilet tank. The valve will also have a knob that is either oval-shaped or looks like a short handle.
This valve is typically found on the lower left side of your toilet, where a pipe extends from the bottom of the tank and connects to the wall or, in some instances, directly to the floor.
It is what tamps down that packing seal, and a loose or damaged packing nut can cause your shutoff valve handle to leak. As a rule of thumb, if your shutoff valve is leaking when the valve is closed, the problem is likely the inner seal of the valve.
Most modern toilets have a dedicated water shut-off valve. The two most common types of shut-off valves found in toilets are: Angle stop valve: This type of valve is installed at a 90-degree angle and is usually located on the wall near the base of the toilet.
Wiggling it back and force may eventually allow you to turn it smoothly. Use Hot Water: Cold metal parts may be more difficult to move. To address the issue, fill a bucket with hot water and soak a cloth. Then place the hot cloth onto the valve for a couple of minutes to help loosen it up.
Your water shutoff valve is typically located in the lower level of your home or business, close to where the water line enters your house as a connection point.
Test the water flow by turning on a faucet—no water should flow if the valve is functioning correctly. Check for leaks around the valve and ensure it turns smoothly. If the valve is hard to turn or water continues to flow, it may need repair or replacement.
If your home is built on a slab, the shut-off valve will most likely be close to or beneath the water heater or under the kitchen sink, but it may also be in any other location. Check your garage or laundry room as well, as some homebuilders use these locations too.
A stopcock looks like a tap, but without an outlet spout. It will be between two lengths of pipe, acting as a connector. This allows the stopcock to block the flow of water when it's closed off.
Simple DIY repairs like fixing a wiggly flush handle or replacing the flapper to stop the toilet from running require you to turn off the water supply to the toilet. While the great majority of toilets have shut-off valves, some older models may not have them conveniently accessible.
Check Handle and Flapper: If your fill valve and fill height are just fine, move on to the handle and flapper. If the chain that connects your handle to the flapper is too short or becomes tangled, the flapper won't close and the water will continue to run.
The Short Answer Is: A leaking toilet shut-off valve can be caused by a worn-out or faulty valve, loose connections, or a damaged water supply line.
Use of the Day: Keep valve stems and faucets rust-free by spraying them with WD-40.
Fixing a Stuck Water Shut Off Valve
We recommend putting a cloth over the handle and using your hand to slowly rock the stuck valve back and forth to loosen it. Keep doing this until the valve can be completely opened and closed. If the valve won't turn after trying this, grab a pair of Channellock pliers.
Know Where the Toilet Shut-Off Valve Is
To find it, follow the cold water pipe that runs to the water tank; connected to it is usually a football-shaped valve at the junction point with the wall. Depending on the configuration, the pipe may connect to the floor.
Turn the Shut-Off Valve Behind the Toilet
Most toilets have a shut-off valve on the wall or floor behind the fixture. Cutting the water supply to your toilet is as simple as turning this valve clockwise until it tightens. If the valve won't turn due to rust, a lubricant spray may prove useful.
Knowing how to replace a toilet tank fill valve isn't hard to learn. Most do-it-yourself homeowners can handle this project in about 60 minutes. All you need is the most basic understanding of how toilets work, a replacement fill valve kit, and the instructions above.
When it comes to shut-off valves, there is good news and bad news. The good news is that they can last for 20 to 25 years. The bad news is that if they are not used and exercised every two years (at least), they may freeze in the open position and need replacement.
It is quite common for minerals such as calcium and lime, along with debris particles such as rust to build up in the rim feed and jet holes of the toilet bowl. Over time, these deposits restrict and block water from flowing into the toilet bowl which will cause a weak or incomplete flush.