Replace Water Shutoff Valve Under Sink

These inexpensive little valves rarely get used and when they do sometimes they leak.

Replace water shutoff valve under sink.

Fortunately a bad shut off valve is extremely easy to replace. Replacing a shut off valve compression valve or angle stop may seem like a daunting task but it really takes less than 5 minutes. Turn off the next valve up the line which may be the main water supply valve. As the line fills watch out for leaks.

Residential plumbing systems can contain several different types of water shut off valves that control water flow. Shut off the water at the main shutoff valve. Under sink shutoff valves also called fixture shutoffs or stop valves allow you to turn off the water to the sink or other fixture without having to use the home s main shutoff. Then open a faucet on the lowest level of your house and another faucet on an upper level to drain the pipes.

Deburr the pipe with a deburring tool. If you have a gas water heater turn the knob to the pilot position. 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. Shut off the circuit breakers to an electric water heater.

Prepare for valve replacement. 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. Turn on the water supply to the sink once the valve is back in place and the plumbing has been completely re secured. Open the faucet to drain the line.

Place a bucket under the old valve. When cutting the supply line cut slowly and gently so. With a few household tool. At this point if water is still exiting the valve it will need replacement.