Replacing Water Shut Off Valve Under Bathroom Sink

Replacing a Water Shut Off Valve Under a Bathroom Sink

A malfunctioning water shut off valve under a bathroom sink can lead to significant water damage. Replacing the valve is a relatively simple plumbing task that can be completed in under an hour with the right tools and materials.

Gather the following materials before starting:

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

Step-by-Step Instructions:

Turn off the water supply: Locate the main water shut off valve for the house and turn it off. Check the sink faucet to ensure the water is no longer flowing.
Open the faucet: Open the bathroom sink faucet to release any remaining water pressure.
Place the bucket under the valve: Place the bucket under the water shut off valve to catch any water that may leak out during the replacement process.
Use the wrench to loosen the old valve: Use the adjustable wrench to turn the nut on the old water shut off valve counterclockwise to loosen it.
Remove the old valve: Once the nut is loose, remove the old water shut off valve.
Apply plumber's putty to the new valve: Roll a small piece of plumber's putty into a rope and wrap it around the threads of the new water shut off valve.
Install the new valve: Hand-tighten the new water shut off valve into the pipe where the old valve was removed. Use the wrench to further tighten the valve, but avoid over-tightening.
Turn on the water supply and check for leaks: Turn on the main water shut off valve and slowly open the bathroom sink faucet. Check for any leaks around the new water shut off valve.

If you find any leaks, tighten the valve further or reapply plumber's putty. Once the leak is resolved, the replacement is complete.

Additional Tips:

* If the old water shut off valve is severely corroded or difficult to remove, it may be necessary to call a professional plumber. * If the new water shut off valve doesn't fit properly, it may be necessary to purchase a different size or type of valve. * Regularly check the water shut off valve for signs of wear or damage to ensure it continues to function properly.