How To Replace Shut Off Valve Under Bathroom Sink

How to Replace a Shut-off Valve Under a Bathroom Sink

Shut-off valves are essential components of any plumbing system, allowing you to isolate water flow to specific fixtures for maintenance or repairs. Replacing a shut-off valve under a bathroom sink is a relatively straightforward task that can be completed in a few simple steps.

Tools and Materials:

New shut-off valve
Adjustable wrench
Plumber's putty
Bucket
Rags

Steps:

Turn off the water supply. Locate the main water shut-off valve for your home and turn it off. This will prevent water from flowing into the sink while you are working.
Open the faucet. This will release any remaining water pressure in the lines.
Place a bucket under the sink. This will catch any water that leaks out while you are replacing the valve.
Disconnect the old valve. Use an adjustable wrench to loosen the nuts that connect the old valve to the water supply lines.
Apply plumber's putty. Roll a small amount of plumber's putty into a ball and apply it to the threads of the new valve.
Install the new valve. Screw the new valve onto the water supply lines and tighten the nuts using the adjustable wrench.
Turn on the water supply. Slowly turn the main water shut-off valve back on and check for leaks around the new valve.

Replacing a shut-off valve under a bathroom sink is a simple and inexpensive way to maintain your plumbing system and prevent costly leaks in the future.