Turn Off Water Under Sink

There may come a time when you need to turn off the water under your sink. Maybe you're making repairs to the faucet, or perhaps you're just trying to prevent water from leaking out. Whatever the reason, it's important to know how to turn off the water so that you can avoid any potential problems.

There are two main types of water shutoff valves under sinks: compression valves and quarter-turn valves. Compression valves are the most common type, and they're typically found on older sinks. Quarter-turn valves are newer and easier to use, and they're becoming more common on newer sinks.

Turning Off Compression Valves

To turn off a compression valve, you'll need a wrench or pliers. First, turn the handle clockwise until it's tight. Then, use the wrench or pliers to tighten the packing nut, which is the nut that's located just below the handle. Tighten the packing nut until it's snug, but don't overtighten it, or you could damage the valve.

Turning Off Quarter-Turn Valves

To turn off a quarter-turn valve, simply turn the handle clockwise until it stops. You should feel a slight resistance when the valve is fully closed.

Testing the Valves

Once you've turned off the water, it's a good idea to test the valves to make sure that they're working properly. To do this, turn on the faucet and check for any leaks. If you see any leaks, you may need to tighten the packing nut or replace the valve.

Tips for Turning Off the Water Under Sink

If you're not sure which type of water shutoff valve you have, consult your sink's manufacturer's instructions.
Always use a wrench or pliers to tighten the packing nut, never use your hands.
Don't overtighten the packing nut, or you could damage the valve.
If you're replacing a valve, be sure to use a new washer.
If you're having trouble turning off the water, call a plumber.

Knowing how to turn off the water under your sink is an important plumbing skill that can help you avoid leaks and other problems. By following the steps outlined above, you can safely and easily turn off the water under your sink.