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Disconnect Supply Lines from Shutoff Valves — Disconnect the Faucet's Water Supply Lines

Beginner3 hours

Part of project

Replace Your Bathroom Faucet: A Step-by-Step Guide · Step 2 of 6

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In this video

Loosen and disconnect the supply line nuts from the shutoff valves. Place a towel below the valves to catch any remaining water. Use an adjustable wrench to turn the nuts counter-clockwise to loosen and remove them. If they're difficult to remove, spray some oil penetrant on them and wait for 30 minutes before trying again. Hold the body of the valve or the pipe below it with another wrench to prevent it from twisting and causing damage.

Goal: Detach Existing Supply Lines

Used in this video

  • Adjustable Wrench (Adjustable Wrench Size: 8-inch) · optionalLoosening and removing the supply line nuts.
  • Towel (Size/Capacity: Medium) · optionalCatching any spills.
  • Penetrating Oil · optionalLoosening stubborn nuts.
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SharkBite Plumbing

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FAQs

What should I do if I can't find or turn the water shut-off valves under my sink?

If the shut-off valves are stuck or inaccessible, try applying penetrating oil and letting it sit. If they still won't budge, you'll need to turn off the main water supply to your house, usually located in your basement, garage, or outside. This is a crucial step to prevent flooding.

Are the two adjustable wrenches listed sufficient, or are there other tools that would make this job easier for a beginner?

While adjustable wrenches are essential, a basin wrench can be incredibly helpful for reaching and loosening stubborn nuts in tight spaces under the sink. A utility knife or scraper can also assist in cleaning the old sealant effectively. Always have a bucket and towels handy for drips.

How thoroughly do I need to clean the sink surface before installing the new faucet?

It's crucial to clean the sink surface thoroughly to remove all traces of old plumber's putty, silicone, and grime. Use a cleaning paste like 'THE PINK STUFF' and a sturdy sponge to ensure the surface is perfectly clean and dry. A clean surface ensures a proper, watertight seal for your new faucet.

What's the most common reason for leaks after installing a new faucet, and how can I prevent them?

The most common reasons for leaks are improperly tightened supply lines or mounting nuts, or an inadequate seal at the faucet base. Ensure all connections are hand-tightened first, then snugged with a wrench without overtightening. Always check manufacturer instructions for any specific sealants or gaskets required.

Transcript
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do work above the water supply shut off valves you'll find one of the connections for the water supply hoses place a towel in the bottom of the vanity and turn the nut counterclockwise if the nuts won't break free with a small amount of pressure spray the threads with some oil penetrant and then wait about a half an hour then try to loosen them but hold on to the body of the valve or the pipe below the nut with another wrench you don't want to twist or break any of the

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