Connect Water Supply Lines — Disconnect the Faucet Supply Line
Part of project
How to Replace a Leaky Angle Stop (Shutoff Valve) Under Your Sink · Step 2 of 8
In this video
Connect flexible water supply lines from the bottom of the hot and cold faucet valves to the corresponding water shutoff valves on the wall. Use two wrenches—one to hold the faucet valve steady and the other to tighten the supply line nut—to avoid damaging the faucet.
Goal: Plumbing Pipes Installation (Standard)
- Do not overtighten the supply line connections, as this can damage the fittings.
Used in this video
- Adjustable Wrench — Tightening supply line connections.
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FAQs
What's the most critical safety step before beginning the angle stop replacement?
The most critical step is always to shut off the main water supply to your house completely, not just the valve under the sink. This prevents potential flooding and ensures no water pressure is present while you're working on the pipe.
How long should a beginner expect this project to take, and what is the approximate cost?
For a beginner, this project typically takes 1 to 2 hours, allowing time for preparation and careful leak checks. The material cost is relatively low, mainly for the new angle stop and a new supply line, usually ranging from $20 to $40.
What tools do I need beyond basic wrenches for this project?
While adjustable wrenches and pliers are essential, 150-grit sandpaper is crucial for cleaning the copper pipe to ensure a good seal. You'll also need a bucket for draining water and plenty of absorbent towels (like WYPALL L40 or Scott Rags) to manage spills.
What's a common mistake beginners make that can lead to leaks after installation?
A common mistake is not thoroughly cleaning and preparing the copper pipe surface before installing the new compression fitting. Ensure the pipe is smooth, free of burrs, and clear of old compression ring residue using 150-grit sandpaper for a watertight seal.
Connect Water Supply Lines — Disconnect the Faucet Supply Line
Part of project
How to Replace a Leaky Angle Stop (Shutoff Valve) Under Your Sink · Step 2 of 8
In this video
Connect flexible water supply lines from the bottom of the hot and cold faucet valves to the corresponding water shutoff valves on the wall. Use two wrenches—one to hold the faucet valve steady and the other to tighten the supply line nut—to avoid damaging the faucet.
Goal: Plumbing Pipes Installation (Standard)
- Do not overtighten the supply line connections, as this can damage the fittings.
Used in this video
- Adjustable Wrench — Tightening supply line connections.
Frequently Asked Questions
What's the most critical safety step before beginning the angle stop replacement?
The most critical step is always to shut off the main water supply to your house completely, not just the valve under the sink. This prevents potential flooding and ensures no water pressure is present while you're working on the pipe.
How long should a beginner expect this project to take, and what is the approximate cost?
For a beginner, this project typically takes 1 to 2 hours, allowing time for preparation and careful leak checks. The material cost is relatively low, mainly for the new angle stop and a new supply line, usually ranging from $20 to $40.
What tools do I need beyond basic wrenches for this project?
While adjustable wrenches and pliers are essential, 150-grit sandpaper is crucial for cleaning the copper pipe to ensure a good seal. You'll also need a bucket for draining water and plenty of absorbent towels (like WYPALL L40 or Scott Rags) to manage spills.
What's a common mistake beginners make that can lead to leaks after installation?
A common mistake is not thoroughly cleaning and preparing the copper pipe surface before installing the new compression fitting. Ensure the pipe is smooth, free of burrs, and clear of old compression ring residue using 150-grit sandpaper for a watertight seal.