Replacing Hot Water Valve Under Kitchen Sink

The shut off valves are easy to spot.

Replacing hot water valve under kitchen sink.

Deburr the pipe with a deburring tool. Start with the kitchen sink shutoff valve turn the taps to the off position. Turn off the next valve up the line which may be the main water supply valve. Look for two sets of valves that have oval shapes.

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. The hot and cold water supply under the sink is turned off at the valves. My water supply valve under the kitchen sink leaks. 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. The cold water supply line from the wall is dripping water slowly. With a few household tool. Open the cold water handle of the kitchen faucet and let the water drain out if you re replacing the cold valve.

I have the faucet installed in the sink but not connected to the hot and cold water. 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. One for the hot water supply and the other for the cold. 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.

Replacing a shut off valve compression valve or angle stop may seem like a daunting task but it really takes less than 5 minutes. Typically there are two shut off valves installed underneath the kitchen sink. Ignoring minor leaks can waste up to three gallons of water every day and can also lead to permanent water stains and rot under your sink. You should see a large pipe usually made of pvc that has a vertical bend in it before running horizontally to the back wall or rarely down to the floor.

Turn off the main water supply for the house. Open the faucet to drain the line. I am replacing the faucet in my kitchen. Put a bucket under the drain pipe.

These inexpensive little valves rarely get used and when they do sometimes they leak. If this happens to you you can simply replace the valve with a new valve that matches the old one. 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.