Turn off the next valve up the line which may be the main water supply valve.
Replacing valves under kitchen sink.
Actual costs will depend on job size conditions and options.
The cold water supply line from the wall is dripping water slowly.
The hot and cold water supply under the sink is turned off at the valves.
Put a bucket under the drain pipe.
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.
Deburr the pipe with a deburring tool.
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.
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.
Then disconnect the supply tube from the shutoff valve.
If this happens to you you can simply replace the valve with a new valve that matches the old one.
Open the cold water handle of the kitchen faucet and let the water drain out if you re replacing the cold valve.
Turn off the main water supply for the house.
Replacing a shut off valve compression valve or angle stop may seem like a daunting task but it really takes less than 5 minutes.
I have the faucet installed in the sink but not connected to the hot and cold water.
I am replacing the faucet in my kitchen.
However calling a plumber can be expensive.
My water supply valve under the kitchen sink leaks.
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.
If you have a gas water heater turn the knob to the pilot position.
Place a bucket under the old 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.
These inexpensive little valves rarely get used and when they do sometimes they leak.
When cutting the supply line cut slowly and gently so.
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.
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.