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Assemble New Compression Valve — Install the New Angle Stop

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How to Replace a Leaky Angle Stop (Shutoff Valve) Under Your Sink · Step 5 of 6

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If applicable, slide the escutcheon plate over the pipe first. Then, slide the compression nut onto the pipe, followed by the ferrule (compression ring). Push the new compression angle stop valve body firmly onto the end of the pipe until it is fully seated against the ferrule. Hand-tighten the compression nut onto the valve.

Goal: Plumbing Fixture Installation

  • Ensure the ferrule is oriented correctly before sliding it on; it typically has a tapered end that faces the valve body.
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FAQs

How long should I expect this project to take for a beginner, and what's the overall difficulty level?

This is a beginner-friendly plumbing project, typically taking 30-60 minutes once you have all the tools and materials ready. The most crucial steps involve ensuring the water supply is off and achieving a watertight seal.

What's the most crucial safety step I need to take before starting to avoid major water damage?

The most crucial step is to fully shut off the main water supply to your home before you begin any work. After turning it off, open a faucet on a lower level to confirm water flow has completely stopped and to drain the lines.

Do I really need a specific type of adjustable wrench, or will any adjustable wrench work for this project?

While the 12-inch adjustable wrench listed provides good leverage, any sturdy adjustable wrench that can securely grip the compression nuts will work. Ensure it's in good condition to prevent slipping and damage.

What is the most common mistake beginners make when installing a new compression angle stop, and how can I avoid it?

The most common mistake is overtightening or undertightening the compression nut, leading to leaks or damaging the valve/pipe. Tighten the nut until it feels snug, then give it an additional quarter to half turn, being careful not to strip threads.

Assemble New Compression Valve — How to Replace a Leaky Angle Stop (Shutoff Valve) Under Your Sink (Step 5, Video 1) | Stesso