Replacing Hot Water Shut Off Valve Under Kitchen 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.

Replacing hot water shut off valve under kitchen sink.

Turn off the main water supply for the house. 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. 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. Open the cold water handle of the kitchen faucet and let the water drain out if you re replacing the cold valve.

My water supply valve under the kitchen sink leaks. These inexpensive little valves rarely get used and when they do sometimes they leak. Start with the kitchen sink shutoff valve turn the taps to the off position. Open the cabinet below the sink and remove anything stored there.

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. The hot and cold water supply under the sink is turned off at the valves. The cold water supply line from the wall is dripping water slowly. Put a bucket under the drain pipe.