Replace Water Shut Off Valve Under Bathroom Sink

If you have a gas water heater turn the knob to the pilot position.

Replace water shut off valve under bathroom sink.

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. 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. If this happens to you you can simply replace the valve with a new valve that matches the old one. Shut off the circuit breakers to an electric water heater.

Then open a faucet on the lowest level of your house and another faucet on an upper level to drain the pipes. These inexpensive little valves rarely get used and when they do sometimes they leak. Turn off the next valve up the line which may be the main water supply valve. Prepare for valve replacement.

Shut off the water at the main shutoff valve. Place a bucket under the old valve. 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. Open the faucet to drain the line.