How do you treat water hammer in pipes?

Agnes Villiger   |   Member since 2005  |  10+ Answers Submitted  |  ✔ Verified

You can cure water hammer by turning off the water behind the waterlogged chamber, opening the offending faucet and permitting the faucet to drain thoroughly. Once all the water drains from the chamber, air will fill it again and restore the cushion.

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Josh Hopkinson   |   Member since 2019  |  10+ Answers Submitted  |  ✔ Verified

In this manner, how do you fix a water hammer in a pipe?


  1. Shut off water supply to the house at the main.
  2. Open all the cold water faucets, start with the highest faucet (2nd or 3rd floor) and work to your lowest faucet (first or basement floor).
  3. Flush all the toilets in the home.
  4. Let water drain from open faucets.
  5. Turn on water supply to the house at the main.
what causes water hammer in a pipeline? The condition is commonly known as water hammer. The technical term is hydraulic shock, and it occurs when water stops or changes directions suddenly. The banging you hear is caused by the shock wave that causes plumbing pipes to move and strike against one another or against wooden framing members.

Mavis Button   |   Member since 2015  |  10+ Answers Submitted  |  ✔ Verified

Similarly one may ask, how do I stop water hammer in my washing machine?

Shut off the valves on the washing machine hoses tightly, then disconnect the hoses from the valves. Take care that you do not lose the washers at the end of the hoses. Connect the water hammer arrester to each water supply valve.

Remy Walsh   |   Member since 2010  |  10+ Answers Submitted  |  ✔ Verified

How do you fix a water hammer in a pipe Australia?

You can fix the water hammering problem by shutting off the main water valve, turning on all taps and draining the entire house. When you fill up water again later, air will again be pushed into the risers designed to prevent water hammering.

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Related Answered Questions

Below is a list of answers to questions that have a similarity, or relationship to, the answers on "How do you treat water hammer in pipes?". This list is displayed so that you can easily and quickly access the available answers, without having to search first.

Anais Bradley   |   Member since 2018  |  ✔ Verified

What is inside a water hammer arrestor?

Water hammer arrestor cutaway The sliding piston absorbs sudden pressure changes and keeps the pipes from banging. When a valve closes quickly and stops the flow, that momentum shakes and pounds pipes. A water hammer arrestor cures this condition with a cushion of air that absorbs the momentum.

Denny Yarlett   |   Member since 2005  |  ✔ Verified

Where should a water hammer arrestor be placed?

The recommended location for the water hammer arrester is at the end of the branch line between the last two fixtures served.

Carmella Keys   |   Member since 2006  |  ✔ Verified

Can a washing machine cause water hammer?

Fast-closing washer valves cause water hammer. It can get so bad that it could possibly damage the pipes or fixtures attached to the pipes.

Blake Corbett   |   Member since 2015  |  ✔ Verified

Why do my pipes shake when I turn on the hot water?

A water hammer is caused by fast-closing valves, like toilet fill valves and faucets. As the water flows through the pipes and the valve shuts off quickly, it causes the water to stop suddenly in the pipes, causing the “hammer” effect. Once the lowest pipe runs clear, close that drain and turn the water main back on.

Eduardo Latham   |   Member since 2006  |  ✔ Verified

Will a check valve stop water hammer?

Studies and research at major hydraulics research institutions have shown that silent check valves, will, in fact, significantly reduce water hammer by reducing the severity of the pressure spikes.

Benjamin Yard   |   Member since 2012  |  ✔ Verified

Can water hammer go away on its own?

You can cure water hammer by turning off the water behind the waterlogged chamber, opening the offending faucet and permitting the faucet to drain thoroughly. Once all the water drains from the chamber, air will fill it again and restore the cushion.

Estrella Thornton   |   Member since 2009  |  ✔ Verified

Is water hammer bad?

Water hammer occurs when water flowing through the pipes is suddenly forced to stop or change direction. And the shock wave can damage pipes and fittings, potentially leading to a plumbing leak. This creates a major mess and the potential for mold, mildew, and lengthy renovations.

Johnny Savage   |   Member since 2007  |  ✔ Verified

Can water hammer burst pipes?

Water hammer occurs when the flowrate of fluid in the pipe changes rapidly. It is also known as “surge flow”. It can cause very high pressures in pipes, very high forces on pipe supports, and even sudden reversals of flow. It can cause burst pipes, damaged supports and pipe racks, and leakage at joints.

Johnny Doherty   |   Member since 2012  |  ✔ Verified

What does a water hammer sound like?

“The noise you hear is the pipe moving because of shock waves.” But worse, prolonged water hammer noise like this can sometimes cause pipe fittings and valves to fail and pipes to burst. Properly installed plumbing contains air pockets or chambers that compress when a shock wave hits them, muffling that water sound.

Carla York   |   Member since 2014  |  ✔ Verified

How much does it cost to fix water hammer?

Replacing this valve, including the part and labor, costs less than $300, according to Connie Hodges, operations manager at Wacker Plumbing & Remodeling in Sterling (703-450-5565, There are other possible causes, ranging from things as simple as a loose washer to air trapped in piping.

Madison Buckley   |   Member since 2010  |  ✔ Verified

Can a plumber fix water hammer?

Call your local Baltimore plumber to fix it! Turn off the water to your house at the main water valve. For a few minutes it will sputter because there's air in the lines, but once the air gets out, turn the water off. If the sound is gone, you need to get your water hammer arrestor fixed.

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