Replacing Hot Water Valve Under Bathroom Sink

Place a bucket under the old valve.

Replacing hot water valve under bathroom sink.

Shut off the water supply. Turn off the next valve up the line which may be the main water supply valve. Open the faucet to drain the line. Replacing a shut off valve compression valve or angle stop may seem like a daunting task but it really takes less than 5 minutes.

My water supply valve under the kitchen sink leaks. Then shut off the upper and lower faucets. Turn on the water supply to the sink once the valve is back in place and the plumbing has been completely re secured. Close the new valve.

These inexpensive little valves rarely get used and when they do sometimes they leak. Turn the water heater gas valve back to on or flip on the circuit breakers to the electric water heater. If this happens to you you can simply replace the valve with a new valve that matches the old one. Then open the water main shutoff valve and let the water run until all the air is out of the pipes.

Start by wearing plastic gloves. Check the new valves for leaks. Fortunately a bad shut off valve is extremely easy to replace. You may have a built in cabinet under the sink and the valves are generally located in it.

Locate the main water supply valve that is usually located under the skin. At this point if water is still exiting the valve it will need replacement. I have the faucet installed in the sink but not connected to the hot and cold water. It is always better to replace them.

Look under the sink for the two turnoff valves one each for the hot and cold water faucets. The cold water supply line from the wall is dripping water slowly. The water to a kitchen or bathroom sink is supplied through small copper or flexible neoprene tubes from a small control valve called a stop or shut off valve under the sink. Move the faucet handle to ensure that the last drops of water are also drained out.

Replacing a bathroom sink valve is rather easy. With a few household tool. Cut the supply line with a pipe cutter leaving enough room between the escutcheon plate and the cut to allow installation of the valve fitting. When cutting the supply line cut slowly and gently so.

I am replacing the faucet in my kitchen. Deburr the pipe with a deburring tool. As the line fills watch out for leaks.