How to Fix a Leaking Toilet Shut-Off Valve

The most common problem of a toilet shut off valve is that it can drip over time. Leaking shut-off valves can leave puddles of water on the bathroom floor. This can ruin bathroom floors and make the room look dirty and destroy bathroom furniture. Leaking is caused by loose packing nuts on these valves. In some cases, this may also be caused by minerals deposits on the washers. Leaking shut-off valves doesn’t necessarily mean it always needs replacement. A simple twist with the wrench can sometimes help you solve your toilet shut-off valve leaking problems. Try the steps below before replacing the toilet device:

Step 1 – Place the Plastic Tub

Put the plastic tub under the leaking valve to reduce the water spillage on the floor.

Step 2 – Fit the Wrench

Fit the adjustable wrench on to the nut of the shut-off valve and turn the nut counter-clockwise at 1/8 to ¼ turn at a time. This will tighten the packing nut and may stop the leaking of the valve.

Step 3 – Protect the Valve

If the leaking doesn’t stop, wrap the masking tape on the slip joint pliers’ jaws. This can protect your shut-off valve from any scratches caused by the sharp edges of the pliers.

Step 4 – Shut Off Water

Shut-off the main water supply to the toilet. Detach and drain the pipes using the wrench or pliers. Use the small plastic tub to catch the water from the pipes to avoid spillage.

Step 5 – Untwist the Nut

Get a hold of the shut-off valve and take it apart. Take out the screw from the handle of the valve and untwist the packing nut. Remove the threaded valve system. When you do this, remember the position of the neoprene washers so that you can easily put them back together later.

Step 6 – Clean the Washers

Take the neoprene washers and clean them by using a clean rag. Remove any mineral deposits around the washer. While cleaning, work them constantly until they are flexible once again.

Step 7 – Assemble the Valve

Assemble the shut-off valve back together. Make sure neoprene washers are positioned properly. Once again, tighten the packing nut 1/8 to ¼ turn at a time using the wrench. Do not use plumber's putty or you might have a hard time fixing the shut-off valve in the future. Make sure you don’t over tighten the nuts because it might damage the valve.

Step 8 – Turn On Water

Turn on the water from the main water supply. Watch out for leaks as the line is being filled. If you see that the valves are still leaking, then its time to replace the shut-off valve.