Replacing Kitchen Sink Supply Lines: A Quick & Easy DIY Guide

Aug 23, 2017 ... Step by step instruction on how to change leaky kitchen sink water supply hoses. Includes how to reach the water supply line nuts under the .....

Replacing Kitchen Sink Supply Lines: A Comprehensive Guide

Is your kitchen sink leaking or showing signs of wear? Replacing the supply lines might be the solution you need. This guide will walk you through the process, ensuring you understand each step and feel confident tackling this task on your own. Let's dive in.

Understanding Your Kitchen Sink's Supply Lines

Before you start, it's essential to understand what supply lines are and their purpose. Supply lines, also known as water supply tubes, carry water to your faucet. They are typically made of flexible stainless steel braided hose or rigid copper or plastic tubing. In this guide, we'll focus on replacing the flexible supply lines.

Tools and Materials Needed

  • Adjustable wrench
  • Channel-type pliers
  • Teflon tape
  • New supply lines (ensure they match the size and type of your existing lines)
  • Rags or towels

Preparation: Turning Off the Water Supply

Before you start, turn off the water supply to your sink. The shutoff valves are usually located under the sink, near the supply lines. If they're stiff or hard to turn, you may need to use a wrench. Once the water is off, turn on the faucet to relieve any remaining pressure in the lines.

Under The Sink Faucet Lines How Do I Shorten This Supply Line For New

Removing the Old Supply Lines

Now that the water is off and the pressure is relieved, it's time to remove the old supply lines. Here's how:

  1. Use an adjustable wrench to loosen and remove the nuts connecting the supply lines to the faucet and the shutoff valves.
  2. Gently pull the old supply lines out, being careful not to damage the connections.

Preparing the New Supply Lines

Before installing the new supply lines, ensure they're the correct size and type for your sink. Also, check that they're long enough to reach from the shutoff valves to the faucet. If not, you may need to purchase extensions.

Once you've confirmed the new lines are suitable, wrap the threads at both ends with Teflon tape. This will help create a watertight seal and prevent leaks. Wrap the tape clockwise, overlapping each layer by half. Use about 3-4 layers.

Replace Kitchen Sink Water Supply Lines - YouTube

Installing the New Supply Lines

Now it's time to install the new supply lines:

  1. Connect one end of the new supply line to the shutoff valve, ensuring it's securely tightened with an adjustable wrench.
  2. Connect the other end to the faucet, again ensuring it's securely tightened.
  3. Repeat the process for the hot and cold water lines.

Testing the New Supply Lines

Once the new supply lines are installed, turn the water supply back on at the shutoff valves. Check for any leaks around the connections. If there are no leaks, turn on the faucet and check the water pressure. If everything is working as it should, you've successfully replaced your kitchen sink's supply lines!

Reference Info

<strong>Replace Kitchen Sink Water Supply Lines - YouTube</strong><p>Aug 23, 2017 ... Step by step instruction on how to change leaky kitchen sink water supply hoses. Includes how to reach the water supply line nuts under the ...</p>

Under The Sink Faucet Lines How Do I Shorten This Supply Line For New
Under The Sink Faucet Lines How Do I Shorten This Supply Line For NewSource: N/A
Reference Info

<strong>How to Replace Water Supply Lines - YouTube</strong><p>Feb 4, 2025 ... Learn how to properly replace your water supply lines with expert tips from Ben Goheen, a master plumber with 15 years of experience.</p>

Replace Kitchen Sink Water Supply Lines - YouTube
Replace Kitchen Sink Water Supply Lines - YouTubeSource: N/A
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<strong>Sink Faucet Water Supply Line Replacement - iFixit Repair Guide</strong><p>Jan 4, 2025 ... Replacing water supply lines does not require any special skills to complete, and should not take any more than an hour, even if it is your ...</p>

How To Replace Sink Supply Lines at Susan Jaimes blog
How To Replace Sink Supply Lines at Susan Jaimes blogSource: N/A
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<strong>Replacing faucet. 5/8 supply lines? : r/Plumbing - Reddit</strong><p>Mar 4, 2024 ... To replace the valves turn the water off to the house and cut the pipe right below the valves. Use something like a hacksaw DO NOT use a pex ...</p>

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Installing Double Sink Plumbing: A GuideSource: N/A
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<strong>Replace a Faucet Like a Plumber | Lifestyle | Inspiration - MOEN</strong><p>Once the supply lines are connected, you need to remove the aerator from the faucet. Depending on your model, you may need to use a small tool to unscrew the ...</p>

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<strong>How to Connect Faucets with Supply Tubes - The Home Depot</strong><p>Oct 31, 2025 ... Connect Supply Lines ... A person attaching hot and cold faucet supply tubes by hand. Wrap the male threads with plumber's tape to ensure a good ...</p>

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How to Replace a Kitchen Sink Faucet : 20 Steps (with Pictures ...Source: N/A
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<strong>Kitchen faucet connections vary and all setups are different, but ...</strong><p>Nov 28, 2025 ... Today, we're going to learn how to replace a kitchen faucet. ... So, what you're going to do is you're going to find the supply lines that come ...</p>

How To Replace Sink Supply Lines at Susan Jaimes blog
How To Replace Sink Supply Lines at Susan Jaimes blogSource: N/A
Reference Info

<strong>How to Replace a Water Supply Line Hose for a Faucet - YouTube</strong><p>Sep 12, 2025 ... Use this type of water supply line hose for your faucet if you have existing Pex pipe supplying your water at your faucet.</p>

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<strong>How to Replace Water Supply Line in Faucet? | Lipka Home</strong><p>How to Replace Water Supply Line in Faucet? · 1. Clean Your Work Area · 2. Shut Off Water Supply · 3. Drain Excess Water from the Pipes · 4. Detach the Supply Line ...</p>

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<strong>Kitchen Faucet Supply Line Types: What Homeowners Need to Know</strong><p>Mar 24, 2026 ... When installing or replacing a kitchen faucet, one important detail often gets overlooked—the supply lines. Understanding kitchen faucet ...</p>

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Sink Water Line Hoses Please Help. Supply Line Leaking! Just InstalledSource: N/A
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<strong>Replacing supply lines that are recessed way up a long faucet</strong><p>Jun 10, 2024 ... I'm not certain I would replace them just because of their age tho. The water supply tubes under my office kitchen sink are likely 20+yrs old.</p>

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Kitchen Sink Water Line Connections – Kitchen InfoSource: N/A
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<strong>How To Install a Kitchen Sink All By Yourself! - YouTube</strong><p>Jul 6, 2025 ... ... supply-stops. for more information about the SharkBite Max ... How to Rough-In Kitchen Sink Plumbing | Drain & Water Lines For BEGINNERS!</p>

How To Replace Sink Supply Lines at Susan Jaimes blog
How To Replace Sink Supply Lines at Susan Jaimes blogSource: N/A
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<strong>How to Install a Kitchen Faucet | Lowe's</strong><p>Turn off the water valves under the sink. Turn on the faucet to relieve pressure in the lines. Turn off power to the disposal, if applicable.</p>

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<strong>The Complete Guide to Faucet Supply Line Sizes and Installation</strong><p>Sep 5, 2025 ... Turn Off the Water Supply: Before beginning installation, turn off the water at the main shut-off valve. · Choose the Right Length: Measure the ...</p>

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<strong>How to Replace Water Supply Lines | SharkBite</strong><p>How To: Replace Water Supply Lines · First, check your home water pressure. · Examine your application(s) and measure. · Turn off the main water line. · Check the p ...</p>

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<strong>What type of fitting is needed to connect kitchen faucet supply lines?</strong><p>Aug 30, 2024 ... I you're just replacing the the supply lines to the sink then you got the wrong size line there. Common kitchen sink ones are 1/2 inch which ...</p>

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<strong>How to Remove Old Supply Lines When Replacing Kitchen Faucet</strong><p>Feb 11, 2024 ... Use an adjustable wrench to loosen the compression nut connecting the supply line to the shut off valve. Hold the valve steady with a second ...</p>

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<strong>How to Change Bathroom Water Supply Line and Sink Pipe - TikTok</strong><p>May 26, 2021 ... LinkedIn, my bio. The first thing you need to do is turn off the water. Then you wanna loosen the plastic pipes. This is really easy to just do ...</p>

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<strong>How to Replace a Water Supply Line - PlumbersStock</strong><p>Replacing Faucet Water Supply Lines · Shut off the water using the valve typically found underneath the sink. · Prepare to remove the existing faucet supply lines ...</p>

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