Replacing Valves Under Kitchen Sink

The cold water supply line from the wall is dripping water slowly.

Replacing valves under kitchen 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. 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. My water supply valve under the kitchen sink leaks. I have the faucet installed in the sink but not connected to the hot and cold water.

These inexpensive little valves rarely get used and when they do sometimes they leak. I am replacing the faucet in my kitchen. Replacing a shut off valve compression valve or angle stop may seem like a daunting task but it really takes less than 5 minutes. Actual costs will depend on job size conditions and options.

The shut off valve under a sink can go unattended for years without giving any problems but once it starts leaking it can lead to a mess quickly. Shut off the circuit breakers to an electric water heater. If you have a gas water heater turn the knob to the pilot position. Then open a faucet on the lowest level of your house and another faucet on an upper level to drain the pipes.

The hot and cold water supply under the sink is turned off at the valves. Turn off the main water supply for the house. For a basic project in zip code 47474 with 6 valves the cost to install a water shut off valve starts at 153 183 per valve. Put a bucket under the drain pipe.

Deburr the pipe with a deburring tool. Turn off the next valve up the line which may be the main water supply valve. Open the cold water handle of the kitchen faucet and let the water drain out if you re replacing the cold valve. 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.

Open the faucet to drain the line. With a few household tool. When cutting the supply line cut slowly and gently so. There are two basic types straight stops and angle stops and these valves normally remain on and are seldom closed functioning maintenance free for years.

If this happens to you you can simply replace the valve with a new valve that matches the old one. Place a bucket under the old valve.