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Water hammer sounds can be annoying, and if not fixed immediately, they can cause severe damage to your pipes. 

Usually, this noise occurs when there’s a rapid change in the velocity of water in the pipes, resulting from a sudden closing or opening of a faucet. It can also cause severe problems like an increased flow of water and banging noises coming from the pipes. And if the pressure surge is significant, it can even lead to burst pipes

In this article, we will be looking at some practical ways to stop water hammer in your pipes. So, if you are ready, let’s jump right in!

8 Ways to Stop Water Hammer (Noisy Pipes)

These are the eight effective ways to get rid of the water hammer in your pipes:

Lady In Yellow Shirt Getting Glass Of Water From Tap

1. Air Pockets In Your Pipes

One of the main culprits of water hammer is the air pockets in your pipes. If you hear the noise just as soon as you open a tap, then it’s a tell-tale sign that air pockets are causing the issue. We suggest turning on the tap nearest to your water meter. 

Then, turn on all the taps one by one until all the taps are flowing. After that, turn them all in reverse order. Hopefully, that will release the air pockets, fixing your water hammer issue.

2. Don’t Open The Valves All The Way

Although it’s not a long-term solution, it’s still worth trying before you get a permanent fix for the issue. As you might know, water hammer is mainly caused by dishwashers and washing machines when the shut-off valves close rapidly. Therefore, we suggest that you try opening the inlet valves partially and not all the way.

3. Make Sure You Secure The Pipe

If you can identify the noisy pipe that is causing the water hammer, make sure you secure it as soon as possible

4. Pressure Limiting Valve

Since high water pressure is among the leading causes of water hammer, ensure you get a pressure limiting valve installed at the meter to fix the issue. If required, don’t hesitate to contact a local plumber. 

5. Water Hammer Arresters

These highly-functional devices are available in our local hardware store. They can be installed at the cold and hot water outlets to solve stop water hammer or noisy pipes, especially when several appliances connect to the same tap.

6. Intake Connections

You can consider replacing the intake connections of devices such as washing machines and dishwashers that tend to cause water hammer. It’s advisable to replace the intake hoses with wider ones for the best results. Even though there's no guarantee doing this will stop water hammer sounds, it’s certainly worth giving it a try. 

7. Consider Installing Soft-Close Faucets

Do you have modern mixer faucets installed at your home? If so, it’s about time you replaced those with conventional taps. That’s because the former tends to shut off the water supply instantly with just a flick of a finger, which often changes the water flow rate, causing a water hammer.

8. Call The Plumber

If the ways mentioned above don’t solve your problem, you have no choice but to contact the local plumber. They’ll run a thorough check on your pipelines to find the root cause of the water hammer and then fix it accordingly. 

How To Install Water Hammer Arresters

We’ve already talked about water hammer arresters; now, we shall look at how you can install them to stop water hammer. 

Man Holding Small Water Hammer Arrestor

1. Identify Which Valve Is Causing The Problem

More often than not, water hammer happens when a tap turns off instantly. So, when you turn on your tap, be sure to listen and identify the origin of the noise. Doing this will help you determine which supply line is causing the issue, and that will be the line where you will have to install the water hammer arrester.

As mentioned previously, dishwashers and washing machines tend to cause water hammer since they feature automatic valves that close instantly.

2. Be Sure To Turn Off The Main Water Supply

Before getting on with the installation, make sure you turn off the main water supply to your house by turning the valve clockwise. Then, allow the pipes to drain by turning on a faucet on the lowest floor of your home. Lastly, keep in mind that you need to drain the pipes entirely before you go ahead and install a water hammer arrester.

3. Install The Arresters On Both The Cold And The Hot Water Supply Lines

When you install the arresters on both the supply lines, it will protect both the pipes from damage caused by this issue. If you are unsure how to go about it, call a professional.

4. Install The Washing Machine Arrester

An arrester specifically devised for washing machines is called “hose attachment” and is constructed to fit the point where the supply line attaches easily. 

Therefore, to install a washing machine arrester, you first need to detach the water supply from the washing machine and then screw the product onto the device. After that, screw the water supply line onto the other end of the water hammer arrester.

On an important note, make sure to measure the diameter of the supply line of the washing machine so that it’s the same size as the attachment of the arrester. Also, don’t forget which supply pipe is cold and hot while reattaching them back.

5. Mark The Area Of Installation

When installing arresters on the other taps, you need to cut the supply line. Make sure you measure the diameter of the supply line and buy a t-fitting that matches the size. Apart from that, you’ll need to purchase an arrester that’ll conveniently screw into the T-fitting. 

Next, place it on the pipe and use a pencil to mark where it will connect. Ideally, you would want to choose a place that’s easily accessible, yet out of sight, such as in the basement or behind an access panel.

6. Cut The Pipe Using A Pipe Cutter

Next, you need to use a pipe cutter to cut the pipe. If the pipe is a bit too thick, you might have to tighten the cutter further and then use it again. If you have a hacksaw, you can use it instead of a pipe cutter. However, a piper will provide a cleaner cut.

7. Prepare For Soldering

The next step is to prepare to solder the t-fitting to the water supply pipe by applying flux. Make sure you apply it where you will be attaching the t-fitting. After that, insert the t-fitting into the pipe. Clean the joint using an emery cloth to make the soldering process more manageable.

8. Soldering

This part is going to be a bit tricky, so read carefully. Also, we strongly recommend using safety goggles for this step. 

First, you need to light the propane torch. Make sure you use the tip to heat the flux till it starts bubbling for the best results. Then, you need to keep moving the torch around to avoid overheating a particular area.

After that, apply the solder; you will see it melting right away after attaching the t-fitting to the supply pipe. Put the flame and the solder all around the pipe to seal correctly. Lastly, screw the arrester onto the t-fitting.

9. Turn On The Water Supply

Now that you have finished installing arresters on both cold and hot water lines, it’s time to turn on the water supply

Stopping Your Noisy Pipes

That was almost everything you needed to know about stopping water hammer. 

Believe it or not, it is a common issue that many Australian residents deal with every year, so you are not alone. And if all the ways mentioned above don’t solve your problem, make sure you call the plumber before it gets too late. 

On that note, it’s time for us to sign off. Until next time, take care!


Photo of Ashley Woolf

Ashley Woolf

Find them on their website: Woolf Plumbing & Gas, Facebook and LinkedIn.

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