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Install the Arrestor — Diagnose and Locate the Problem

Beginner3 hours

Part of project

How to Install a Water Hammer Arrestor to Stop Banging Pipes · Step 1 of 7

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In this video

Install the water hammer arrestor onto the water supply line at the location of the problem. This means attaching it to the hot or cold water lines that connect to the noisy appliance, such as the washing machine, dishwasher, or water heater. The device threads onto the valve or a T-fitting in the line, where it cushions the blow from the water, stopping the violent rattling of the pipes and eliminating the hammer noise.

Goal: Install the water hammer arrestor

  • Arrestors are available with various fittings; ensure you get the correct one for your application (e.g., hose thread for a washing machine, pipe thread for other installations).

Used in this video

  • Adjustable Wrench (Tool Type: Plumbing Tools, Power Source: Manual)Tightening the water hammer arrestor onto the plumbing fitting.
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FAQs

What essential tools do I need for this project, especially for cutting and preparing pipes?

You'll definitely need an AUTOCUT 1/2 in. Copper Pipe Tubing Cutter to make clean, straight cuts. Don't forget the Husky 1-5/8 in. Inner/Outer Reamer and Deburring Tool to smooth the pipe ends, which is crucial for leak-free push-to-connect fitting installation. An adjustable wrench will also be handy for general tightening tasks.

What are the most important safety precautions to take before starting this plumbing project?

Always start by completely shutting off the main water supply to your home and draining the pipes to relieve any pressure, which prevents unexpected floods. Wear appropriate eye protection and gloves when cutting pipes to protect against sharp edges and debris. Have a bucket and towels ready for any residual water.

How difficult is this project for a beginner, and what's a realistic time and cost expectation?

This project is rated 'beginner' friendly, primarily due to the use of push-to-connect fittings which significantly simplify the installation process. You can realistically expect to complete it within the estimated 3 hours. Material costs will mainly involve the water hammer arrestor and a T-fitting, likely under $50 depending on your local store.

I'm worried about leaks. What are common mistakes beginners make during installation, and how can I prevent them?

A common mistake is not fully deburring the pipe ends or not pushing the push-to-connect fittings all the way in until they seat firmly. Ensure the pipe is clean and smooth, and mark the insertion depth on the pipe to confirm it's fully seated before pushing. After restoring water, carefully check all new connections for any drips immediately.

Install the Arrestor — How to Install a Water Hammer Arrestor to Stop Banging Pipes (Step 1, Video 1) | Stesso