Attach Supply Lines to New Faucet — Install the New Supply Line
Part of project
How to Fix a Leak at a Faucet Supply Line Connection · Step 4 of 5
In this video
Take the new faucet and the new braided supply lines. Attach the supply lines to the hot and cold water inlets on the underside of the faucet. Hand-tighten the connections first, then use pliers to gently tighten them another quarter-turn. Be careful not to overtighten and damage the threads or rubber gaskets.
Goal: Pre-assemble the new faucet with its supply lines.
- Attaching the lines before mounting the faucet is much easier than doing it in the cramped space under the sink.
Used in this video
- Pliers — Gently tightening the supply line connections to the faucet.
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FAQs
How long does a beginner typically need to fix a faucet supply line leak, and what's the most common hold-up?
For most beginners, this project takes about 30-60 minutes. The biggest time-consumer is often preparing the work area, ensuring the water is fully off, and carefully tightening the new connections to avoid overtightening or cross-threading.
The project mentions a 'Braided Polymer Faucet Supply Line.' Are there other types, and how do I ensure I get the right replacement?
Yes, supply lines come in various materials like braided stainless steel or PEX, which are also durable options. The most critical step is to match the length and the connector sizes (e.g., 3/8 in. compression x 1/2 in. FIP) of your new line to your existing one and the connections on your faucet and shut-off valve.
I've replaced the supply line, but it's still leaking slightly after installation. What's the first thing I should check?
First, ensure both nuts are snug but not overtightened; over-tightening can damage internal washers or threads. Confirm the supply line is seated straight without cross-threading, and visually check that the small rubber washer inside the faucet connection is present and intact, as this creates the primary seal.
Is it ever okay to just tighten the old leaky supply line connection instead of replacing the entire line?
You can attempt a slight turn with your wrench to see if it stops the leak, but if it's an older line or already tight, this often isn't a permanent fix and could worsen the leak. Replacing the inexpensive supply line ensures a fresh, reliable seal, especially if the internal washers are worn or compressed.
Attach Supply Lines to New Faucet — Install the New Supply Line
Part of project
How to Fix a Leak at a Faucet Supply Line Connection · Step 4 of 5
In this video
Take the new faucet and the new braided supply lines. Attach the supply lines to the hot and cold water inlets on the underside of the faucet. Hand-tighten the connections first, then use pliers to gently tighten them another quarter-turn. Be careful not to overtighten and damage the threads or rubber gaskets.
Goal: Pre-assemble the new faucet with its supply lines.
- Attaching the lines before mounting the faucet is much easier than doing it in the cramped space under the sink.
Used in this video
- Pliers — Gently tightening the supply line connections to the faucet.
Frequently Asked Questions
How long does a beginner typically need to fix a faucet supply line leak, and what's the most common hold-up?
For most beginners, this project takes about 30-60 minutes. The biggest time-consumer is often preparing the work area, ensuring the water is fully off, and carefully tightening the new connections to avoid overtightening or cross-threading.
The project mentions a 'Braided Polymer Faucet Supply Line.' Are there other types, and how do I ensure I get the right replacement?
Yes, supply lines come in various materials like braided stainless steel or PEX, which are also durable options. The most critical step is to match the length and the connector sizes (e.g., 3/8 in. compression x 1/2 in. FIP) of your new line to your existing one and the connections on your faucet and shut-off valve.
I've replaced the supply line, but it's still leaking slightly after installation. What's the first thing I should check?
First, ensure both nuts are snug but not overtightened; over-tightening can damage internal washers or threads. Confirm the supply line is seated straight without cross-threading, and visually check that the small rubber washer inside the faucet connection is present and intact, as this creates the primary seal.
Is it ever okay to just tighten the old leaky supply line connection instead of replacing the entire line?
You can attempt a slight turn with your wrench to see if it stops the leak, but if it's an older line or already tight, this often isn't a permanent fix and could worsen the leak. Replacing the inexpensive supply line ensures a fresh, reliable seal, especially if the internal washers are worn or compressed.