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 .....
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.
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.
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.

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

Now it's time to install 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!
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