What’s that hammering noise?

Why do I hear a hammering noise coming from my pipes? Is this a common plumbing issue and how can Doherty Plumbing Solutions help?

Emergency plumbing Glen Waverley

An anxious customer from Glen Waverley reached out to us, suspecting a fault in their hot water plumbing connection. They had heard strange noises coming from the pipework when the hot water taps were turned off in their laundry, bathroom and powder room.

Doherty Plumbing Solutions’ licensed plumbing professional George was at the scene to resolve the problem.

After an inspection, George detected the cause of the noise was water hammer occurring inside the connection.

He looked into the Aquamax gas storage heater unit outside the building and located the faulty duo valve that was quite old. After isolating the water supply, George replaced the old valve and re-connected the supply line directly to hot water outlet. Then, the plumbing fixtures inside the house were all tested. The situation was much improved!

Well done, George.

What is ‘water hammer’ effect?

Water hammer, or hydraulic shock, involves a sudden shock experienced by the water flow inside a pipeline, after it has encountered a blockage (such as a shut-off valve). Once the flowing water hits this block, the water molecules’ tendency is to retrace their flow in the opposite direction, when they collide with the incoming molecules. This sudden change in direction of the water creates a huge pressure surge moving pipes, causing a banging sound.

How can high water pressure damage pipes?

The increased pressure build-up due to a water hammer effect can not only damage pipelines, but also cause cracks that lead to water leaks. They can even harm the various valve systems in the plumbing connections, snowballing into additional effects on connected appliances. For example, it can blow off the diaphragm in pressure tanks resulting in irregular water flow, or affect water meters.

How to tackle the water hammer issue?

It is crucial to maintain the pipelines regularly with the help of professional services, such as Doherty Plumbing Solutions. Undertaking checks of the pipework, ensuring there are no blockages, and fitting pipes in correct alignment, are important first steps that can help in the long run.

Additional measures could also include the following:

  • Fitting valves that close slowly to prevent sudden blockage.
  • Ensuring pipelines have built-in provisions for air chambers, which act as shock absorbers to reduce the effects of accumulating pressure.

Who can help with water hammer issues?

Don’t let a water hammer issue cause extensive damage to the plumbing connections and fixtures. Act fast, TODAY!

At Doherty Plumbing Solutions, we are here to help you tackle the bang and prevent a potential disaster in your home or business.

Contact our team at:

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    Super quick diagnosis and service from the crew at Doherty’s Plumbing. The plumber who attended was really friendly and helpful. Highly recommend 😉
    Peggy Couper-Woods Avatar
    Peggy Couper-Woods
    10/21/2025
    Doherty Plumbing have been our plumbers at Paris Financial for many years. They are reliable, respective of our team and reasonably priced. I highly recommend them
    Patrick Mannix Avatar
    Patrick Mannix
    9/30/2025
    Came same day as I called to fix broken tap that couldn’t be turned off (had to turn water off at mains to stop flooding). Third time I’ve used them within 12 months for different issues. Very helpful, professional staff and reasonable pricing. Highly recommended.
    Garry & Wendy Grinsted Avatar
    Garry & Wendy Grinsted
    4/23/2024
    I have been dealing with Doherty Plumbing for some years and I find them to be professional, knowledgeable and prompt. Their costs are very competitive. They are quick and always fix the problem. They have been so competent and reliable, that I will always call them and never go anywhere else.
    Gillian Morgan Avatar
    Gillian Morgan
    2/06/2025
    Very appreciative of Doherty Plumbing Solutions for their prompt and excellent service at a particularly busy time of the year in the lead up to Christmas. Attended same day we rang them! Highly recommended.
    John Frazzetto Avatar
    John Frazzetto
    12/30/2023
    Prompt responses, competitive pricing and jobs completed in a timely manner. Would recommend and will use again for other jobs.
    Greg Wood Avatar
    Greg Wood
    10/01/2025
    Tim arrived on time and quickly and efficiently got to the work needed - snaking out a blocked storm outlet. All working now like it should and as I hoped. Great service from Doherty’s!
    Mark Coffey Avatar
    Mark Coffey
    8/12/2025
    This is the second time I have used Doherty Plumbing Solutions. Their service and communication is first class. Tim and Angus were very professional. They were able to find the source of a difficult leak and make the appropriate repairs. I appreciate the quality work that they have done.
    Margaret Holdsworth Avatar
    Margaret Holdsworth
    12/30/2023
    James was professional and knowledgeable. He explained my shower leaking issues as I was not able to attend myself. The plumbing work was completed promptly. And I was advised next steps with Tiler to make water proof. Very helpful and would definitely recommend to my family & friends.
    Fay Avatar
    Fay
    11/21/2025
    Of the many plumbing services they offer, this is the second time I've engaged them for different types of work. James has been very helpful and efficient in scheduling a time for a roof leak repair. Very pleased that the work was completed promptly. Trust that they have addressed the issues at hand.
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    tjokro aminoto
    12/13/2024
    For reliable plumbing services, call 03 9877 5775 or 0417 577 432