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Disconnect Water Supply Lines — Disconnect the Water Supply Lines

Beginner3 hours

Part of project

How to Replace a Bathroom Sink Faucet: A Step-by-Step DIY Guide · Step 2 of 6

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In this video

Using an adjustable wrench, carefully loosen the nuts connecting the flexible water supply lines to the shutoff valves. Hold the valve with one hand or another wrench to prevent it from twisting. Once the nuts are loose, unscrew them by hand and pull the lines away from the valves, directing any draining water into the bucket.

Goal: Disconnect water supply

  • Be careful not to damage the shutoff valves or the pipes in the wall. If a connection is corroded, apply penetrating oil.

Used in this video

  • Adjustable WrenchLoosening the nuts on the water supply lines.
  • BucketCatching water from the supply lines.
60.5K views15010 minutes
Ethan Chlebowski

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FAQs

Do I really need a basin wrench for this project, or can I just use an adjustable wrench?

While an adjustable wrench can sometimes work for easily accessible nuts, a basin wrench (like the Husky Basin Wrench 16PL0127 mentioned) is highly recommended. It's specifically designed to reach and loosen mounting nuts in tight, awkward spaces under the sink, making the removal of the old faucet much easier and less frustrating, especially for beginners.

What's the most crucial step to prevent water damage during the faucet replacement?

Absolutely ensure both the hot and cold water supply lines are completely turned off at the angle stops beneath the sink before you begin any work. Test by briefly turning on the old faucet to confirm the water flow has stopped. Keep the Unger 6 Gal. Heavy-Duty Plastic Bucket ready to catch any residual water when disconnecting lines.

What should I do if the old faucet's mounting nuts are rusted or impossible to loosen?

For stubborn or rusted nuts, first try applying a penetrating oil like WD-40 or Liquid Wrench and let it sit for 10-15 minutes to help loosen them. If they still won't budge, you may need to carefully use a hacksaw blade or a rotary tool with a cut-off wheel to cut through the nuts, taking extreme caution not to damage the sink or supply lines.

The project lists the difficulty as 'beginner', but an estimated 3 hours seems long. What makes it take that much time?

The 'beginner' difficulty refers to the straightforward nature of the tasks, not necessarily the speed. The 3-hour estimate accounts for potential real-world challenges such as tight working spaces, rusted nuts, properly reading new faucet instructions, and thorough leak testing. Rushing can lead to mistakes, so taking your time to be meticulous is key.

Transcript
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Have a little bucket to catch the water. Either bucket works just fine. Getting it just a little wrench or something or some type of wrench so you could unscrew those. Make out myself an adjustable wrench here. Then you just get something underneath it to catch the water. It really shouldn't be as much. Remember the less. So this is already shut off so make sure you shut that off before you open this and otherwise you're gonna be in for a surprise. Okay, so there's a few things we need to disconnect

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