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Apply New Teflon Tape — Attach the Water Hammer Arrestor

Beginner4 hours

Part of project

How to Install an Air Chamber to Prevent Water Hammer · Step 6 of 7

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Take your roll of Teflon tape and wrap it around the clean threads of the shower arm. It's crucial to wrap the tape in a clockwise direction (the same direction you will tighten the new showerhead). This prevents the tape from unraveling as you screw on the new fixture. Apply two to three full wraps around the threads, ensuring it's snug.

Goal: Seal the threads

  • Always wrap Teflon tape in the same direction that you will be tightening the fitting (clockwise) to prevent it from bunching up or unwinding during installation.
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Royce Renovations

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FAQs

How difficult is this project for a beginner, and is the 4-hour estimate accurate?

This project is rated beginner-friendly, but taking your time, especially with pipe cutting and compression fittings, is crucial. The 4-hour estimate accounts for preparation, potential draining time, and careful installation, so allow yourself ample time to avoid rushing and ensure a leak-free result.

What are the most common mistakes when using compression fittings, and how can I prevent leaks?

Leaks from compression fittings often stem from not deburring pipe ends properly, misaligning the nut, or over-tightening. Ensure pipe ends are smooth and square, hand-tighten the nut, then use a wrench for another 1/2 to 3/4 turn for a secure seal, being careful not to overtighten and strip the threads.

The guide lists multiple copper pipe cutters; which one is best for this project, and is a deburring tool essential?

A close-quarters tubing cutter or an AUTOCUT 1/2 in. cutter is ideal for working in tight spaces common under sinks or behind walls. Yes, a deburring tool like the Husky 1-5/8 in. reamer is absolutely essential to ensure a smooth, clean pipe end for leak-free compression fitting connections.

What are the most important safety precautions to take during this water hammer arrestor installation?

Always shut off the main water supply and drain the lines completely before cutting. Wear safety glasses to protect your eyes from metal shavings, and be cautious of sharp pipe edges after cutting. Have towels and a bucket ready for any residual water to minimize mess.