Remove the Old PRV — Remove the Old Angle Stop
Part of project
How to Replace a Leaky Angle Stop (Shutoff Valve) Under Your Sink · Step 3 of 7
In this video
Using two large wrenches, such as adjustable wrenches or channel-lock pliers, grip both the fitting on the pipe and the corresponding nut on the PRV. Apply counter-pressure to the pipe fitting while turning the PRV nut to prevent twisting and damaging the copper pipe. These fittings can be extremely tight due to age and corrosion. If stuck, apply a penetrating lubricant like WD-40 or silicone spray and allow it to soak in before trying again. It may take significant force and leverage to break the seal. Once both sides are loosened, unscrew the nuts completely and remove the old PRV from the pipeline.
Goal: Remove Faulty Component
- This step can require a lot of force. Be careful not to slip and injure yourself or damage the pipes.
Used in this video
- Large Adjustable Wrench — To provide the necessary leverage to loosen the large nuts on the PRV fittings.
- Channel-Lock Pliers — To grip the pipe fittings and provide counter-torque while loosening the nuts.
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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.
Remove the Old PRV — Remove the Old Angle Stop
Part of project
How to Replace a Leaky Angle Stop (Shutoff Valve) Under Your Sink · Step 3 of 7
In this video
Using two large wrenches, such as adjustable wrenches or channel-lock pliers, grip both the fitting on the pipe and the corresponding nut on the PRV. Apply counter-pressure to the pipe fitting while turning the PRV nut to prevent twisting and damaging the copper pipe. These fittings can be extremely tight due to age and corrosion. If stuck, apply a penetrating lubricant like WD-40 or silicone spray and allow it to soak in before trying again. It may take significant force and leverage to break the seal. Once both sides are loosened, unscrew the nuts completely and remove the old PRV from the pipeline.
Goal: Remove Faulty Component
- This step can require a lot of force. Be careful not to slip and injure yourself or damage the pipes.
Used in this video
- Large Adjustable Wrench — To provide the necessary leverage to loosen the large nuts on the PRV fittings.
- Channel-Lock Pliers — To grip the pipe fittings and provide counter-torque while loosening the nuts.
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.