Replace Water Shutoff Valve Under Sink

Prepare for valve replacement.

Replace water shutoff valve under sink.

Deburr the pipe with a deburring tool. Fortunately a bad shut off valve is extremely easy to replace. With a few household tool. Replacing a shut off valve compression valve or angle stop may seem like a daunting task but it really takes less than 5 minutes.

If you have a gas water heater turn the knob to the pilot position. Open the faucet to drain the line. Shut off the water at the main shutoff valve. The main water shut off valve stops the flow to the entire home from the water meter while other water valve types shut off the water at individual appliances fixtures and faucets.

Place a bucket under the old valve. 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. Then open a faucet on the lowest level of your house and another faucet on an upper level to drain the pipes. Turn off the next valve up the line which may be the main water supply valve.

At this point if water is still exiting the valve it will need replacement. Turn on the water supply to the sink once the valve is back in place and the plumbing has been completely re secured. 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. Residential plumbing systems can contain several different types of water shut off valves that control water flow.

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. If this happens to you you can simply replace the valve with a new valve that matches the old one. 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. When cutting the supply line cut slowly and gently so.