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How to Install a Water Hammer Arrestor: A Step-by-Step Guide

Updated: May 7

Are you tired of hearing loud banging noises every time you shut off a faucet or valve in your plumbing system? If so, it's likely that you have water hammer, a common problem caused by the sudden pressure changes that occur when water is rapidly stopped or redirected in your pipes.

How to install water hammer arrestors
How to install water hammer arrestors?

Luckily, installing a water hammer arrestor can help eliminate these annoying sounds and prevent damage to your plumbing system. Here's a step-by-step guide on how to install a water hammer arrestor:

  1. Turn off the water supply: Before starting any plumbing work, make sure to turn off the main water supply to your home or the specific area where you'll be working.

  2. Identify the location: Water hammer arrestors are typically installed near the source of the problem, such as a washing machine or dishwasher. Identify the location where the water hammer is occurring and plan to install the arrestor nearby.

  3. Choose the right type of arrestor: Water hammer arrestors come in different sizes and types, such as inline, screw-on, or threaded. Choose the type that is suitable for your plumbing system and installation location.

  4. Install the arrestor: Install the water hammer arrestor between the source of the water hammer and the valve or faucet. Use pipe cutters or a hacksaw to cut the pipe, then install the arrestor according to the manufacturer's instructions. Be sure to use Teflon tape on the threads of the arrestor to prevent leaks.

  5. Turn the water supply back on: Once the arrestor is securely in place, turn the water supply back on and test the system. If the water hammer persists, you may need to install additional arrestors in other locations.

By following these simple steps, you can successfully install a water hammer arrestor and enjoy a quieter, more efficient plumbing system.

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