Install New Valve — Install New Angle Stop
Part of project
How to Replace a Leaky Angle Stop (Shutoff Valve) Under Your Sink · Step 5 of 7
In this video
Take the new quarter-turn compression angle stop valve and slide it onto the end of the prepared copper pipe. Use a specialized angle stop wrench to hold the body of the valve in place. While holding the valve steady, use a pair of channel-lock pliers to tighten the compression nut onto the valve body. This compresses the ferrule inside, creating the seal.
Goal: Install new angle stop valve
- Do not overtighten the compression nut, as this can damage the fitting or the pipe. A common guideline is to tighten it hand-tight plus one full turn with a wrench.
Used in this video
- Angle Stop Wrench (Wrench Type: Basin wrench) · optional — Holding the body of the angle stop valve steady during tightening.
- Channel-lock pliers (Pliers Type: Channel-lock) — Tightening the compression nut on the new valve.
8K subscribers
FAQs
What's the absolute first thing I should do to ensure safety and prevent water damage before starting?
The most critical first step is to shut off the main water supply to your house. After that, open the nearest faucet (or the faucet above the angle stop you're replacing) to drain any residual water from the lines and relieve pressure, minimizing spills during the replacement.
Is this project genuinely suitable for a beginner, and is the 3-hour estimate realistic for someone new to plumbing?
Yes, this project is considered beginner-friendly as it doesn't require advanced plumbing skills like soldering. The 3-hour estimate is realistic, accounting for preparation, potential challenges like corroded parts, careful installation, and thorough leak checking, which is crucial for a successful outcome.
Do I really need all the specialized wrenches and pliers listed, or can I manage with basic tools?
While an adjustable wrench is essential, the Channellock pliers (like the 12 in. V-Jaw Tongue and Groove) are highly recommended. They provide superior grip, especially on older, potentially rounded or stuck nuts, preventing frustration and potential damage. A good flashlight is also invaluable for seeing into tight, dark spaces under a sink.
What's the most common mistake beginners make that leads to leaks after installing the new angle stop?
The most common mistake is improper installation of the compression fitting. Ensure the pipe stub-out is clean and smooth, and the compression nut is tightened correctly. Tighten it firmly by hand, then use a wrench for another 1/2 to 3/4 turn – overtightening can crush the ferrule, while undertightening will leak.
Install New Valve — Install New Angle Stop
Part of project
How to Replace a Leaky Angle Stop (Shutoff Valve) Under Your Sink · Step 5 of 7
In this video
Take the new quarter-turn compression angle stop valve and slide it onto the end of the prepared copper pipe. Use a specialized angle stop wrench to hold the body of the valve in place. While holding the valve steady, use a pair of channel-lock pliers to tighten the compression nut onto the valve body. This compresses the ferrule inside, creating the seal.
Goal: Install new angle stop valve
- Do not overtighten the compression nut, as this can damage the fitting or the pipe. A common guideline is to tighten it hand-tight plus one full turn with a wrench.
Used in this video
- Angle Stop Wrench (Wrench Type: Basin wrench) · optional — Holding the body of the angle stop valve steady during tightening.
- Channel-lock pliers (Pliers Type: Channel-lock) — Tightening the compression nut on the new valve.
Frequently Asked Questions
What's the absolute first thing I should do to ensure safety and prevent water damage before starting?
The most critical first step is to shut off the main water supply to your house. After that, open the nearest faucet (or the faucet above the angle stop you're replacing) to drain any residual water from the lines and relieve pressure, minimizing spills during the replacement.
Is this project genuinely suitable for a beginner, and is the 3-hour estimate realistic for someone new to plumbing?
Yes, this project is considered beginner-friendly as it doesn't require advanced plumbing skills like soldering. The 3-hour estimate is realistic, accounting for preparation, potential challenges like corroded parts, careful installation, and thorough leak checking, which is crucial for a successful outcome.
Do I really need all the specialized wrenches and pliers listed, or can I manage with basic tools?
While an adjustable wrench is essential, the Channellock pliers (like the 12 in. V-Jaw Tongue and Groove) are highly recommended. They provide superior grip, especially on older, potentially rounded or stuck nuts, preventing frustration and potential damage. A good flashlight is also invaluable for seeing into tight, dark spaces under a sink.
What's the most common mistake beginners make that leads to leaks after installing the new angle stop?
The most common mistake is improper installation of the compression fitting. Ensure the pipe stub-out is clean and smooth, and the compression nut is tightened correctly. Tighten it firmly by hand, then use a wrench for another 1/2 to 3/4 turn – overtightening can crush the ferrule, while undertightening will leak.