A worn out washer is among the most common causes of leaking sinks.
Valve under kitchen sink leaking.
Turn on the faucet and leave open allowing the remaining water in the line to empty into the sink.
The kitchen faucet leaking under the sink is a fairly common issue.
There s an easy way to fix it and you may want to give it a try.
However calling a plumber can be expensive.
Reassemble the shutoff valve turn the main house valve back on and check for leaks.
Avoid gumming up the inside of the shutoff valve.
Take the valve to your local home improvement store or go on.
Place a throw away towel or a bucket under the valve.
Required tools for this project.
Replacement of the valve is the only fix in.
Sink leaks caused by worn out washers can be fixed by simply replacing the washer.
If you do have to replace the water supply valve under your kitchen sink.
Twist the valve under your sink to turn off the water supply valve or valves.
Don t use any pipe dope or plastic tape on the valve stem s threads.
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If the water continues leaking the packing nut or the valve fixture has been compromised.
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.
Alternatively it could leak water under the sink meaning you ll only notice the leak if you look under the counter while the faucet is on.
If there aren t individual shutoff valves.
A leak coming from the faucet is easy to spot since water often pools up around it when the sink is turned on.
If the valve leak persists turn off the main water shutoff valve then disconnect the valve and replace it.
If the water stops leaking the packing nut was the problem.
The constant friction results in the washers wearing out by which time you will start noticing leaks around the spout.
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.
If your water supply valve is leaking you may not need to replace it.
Remove the valve with a wrench.