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Disconnect Old Faucet and Supply Lines — Disconnect Faucet Supply Line

Beginner

Part of project

How to Replace a Leaky Angle Stop (Shutoff Valve) Under Your Sink · Step 2 of 6

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In this video

Place a bucket under the plumbing. Use an adjustable wrench to loosen the nuts connecting the supply lines to the shut-off valves. Then, use a basin wrench to reach up behind the sink and unscrew the nuts connecting the supply lines to the faucet's threaded shanks. Finally, use the basin wrench to loosen and remove the lock nuts holding the old faucet to the sink.

Goal: Remove old plumbing connections

  • A basin wrench is specifically designed for reaching these difficult nuts and is highly recommended for this step.

Used in this video

  • Basin Wrench (Basin Wrench: Standard)For tightening and loosening nuts in the tight space behind the sink.
  • Adjustable Wrench (Adjustable_Wrench_Size: 8_inch)To loosen the supply line nuts from the shut-off valves.
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FAQs

How long should I expect this project to take for a beginner, and what's the overall difficulty level?

This is a beginner-friendly plumbing project, typically taking 30-60 minutes once you have all the tools and materials ready. The most crucial steps involve ensuring the water supply is off and achieving a watertight seal.

What's the most crucial safety step I need to take before starting to avoid major water damage?

The most crucial step is to fully shut off the main water supply to your home before you begin any work. After turning it off, open a faucet on a lower level to confirm water flow has completely stopped and to drain the lines.

Do I really need a specific type of adjustable wrench, or will any adjustable wrench work for this project?

While the 12-inch adjustable wrench listed provides good leverage, any sturdy adjustable wrench that can securely grip the compression nuts will work. Ensure it's in good condition to prevent slipping and damage.

What is the most common mistake beginners make when installing a new compression angle stop, and how can I avoid it?

The most common mistake is overtightening or undertightening the compression nut, leading to leaks or damaging the valve/pipe. Tighten the nut until it feels snug, then give it an additional quarter to half turn, being careful not to strip threads.

Disconnect Old Faucet and Supply Lines — How to Replace a Leaky Angle Stop (Shutoff Valve) Under Your Sink (Step 2, Video 1) | Stesso