Remove the Shutoff Valve — Remove Old Compression Nut and Ferrule
Part of project
How to Replace a Leaky Angle Stop (Shutoff Valve) Under Your Sink · Step 4 of 8
In this video
To access the ferrule, first remove the old shutoff valve. Use a pipe wrench to hold the body of the valve steady to prevent twisting the copper pipe. Use a second adjustable wrench to grip the compression nut located behind the valve body. Turn the adjustable wrench counter-clockwise to loosen the nut. Once it's loose, you can typically unscrew it the rest of the way by hand. Slide the valve and the loosened nut off the end of the pipe.
Goal: Expose the ferrule for removal
- Always use a second wrench to back-hold the valve body. This prevents the force from being transferred to the copper pipe, which could bend or break it.
Used in this video
- Pipe Wrench (brand: Generic, Tool Type: Pipe wrench, Power Source: Manual, Size/Capacity: Medium, Durability: High, Cost: Medium, Pipe Wrench: 12) — To hold the body of the shutoff valve steady during removal.
- Adjustable Wrench (brand: Generic, Tool Type: Adjustable wrench, Power Source: Manual, Size/Capacity: Medium, Durability: High, Cost: Low, Adjustable_Wrench_Size: 8_inch) — To loosen the compression nut on the shutoff valve.
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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.
Remove the Shutoff Valve — Remove Old Compression Nut and Ferrule
Part of project
How to Replace a Leaky Angle Stop (Shutoff Valve) Under Your Sink · Step 4 of 8
In this video
To access the ferrule, first remove the old shutoff valve. Use a pipe wrench to hold the body of the valve steady to prevent twisting the copper pipe. Use a second adjustable wrench to grip the compression nut located behind the valve body. Turn the adjustable wrench counter-clockwise to loosen the nut. Once it's loose, you can typically unscrew it the rest of the way by hand. Slide the valve and the loosened nut off the end of the pipe.
Goal: Expose the ferrule for removal
- Always use a second wrench to back-hold the valve body. This prevents the force from being transferred to the copper pipe, which could bend or break it.
Used in this video
- Pipe Wrench (brand: Generic, Tool Type: Pipe wrench, Power Source: Manual, Size/Capacity: Medium, Durability: High, Cost: Medium, Pipe Wrench: 12) — To hold the body of the shutoff valve steady during removal.
- Adjustable Wrench (brand: Generic, Tool Type: Adjustable wrench, Power Source: Manual, Size/Capacity: Medium, Durability: High, Cost: Low, Adjustable_Wrench_Size: 8_inch) — To loosen the compression nut on the shutoff valve.
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.