3720 Spruce St,

Philadelphia, PA 19104

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Mon-Sat 7:00am-7:00pm

Sunday 10:00am-6:00pm

3720 Spruce St,

Philadelphia, PA 19104

5 Helpful Steps for Correcting Water Hammer Problems in Your Plumbing

The Perfect Tool to Help Solve Plumbing System Water Noises and Water Hammer in House Piping

In some plumbing systems when a tap or an automated valve like in a washing machine ends the water too fast, it attempts to keep going and you get a banging noise throughout your home. The pipes are actually shifting and banging into something. This banging force can be strong enough to break pipe joints apart which could cause real problems.

This phenomenon is known as a “Water Hammer” which can be resolved by putting a special air chamber device (shock arrestor) on the affected valve. This process gives the water someplace to go due to the fact that the air is compressible.


A water hammer problem can take place all of a sudden, especially when shutting off a kitchen or shower room faucet or any other faucet rapidly. It basically generates some vibrations through the  pipes which causes the hammer noises.


These sounds are comparable to shock waves that will make fixtures, pipes and faucets to shake. Technically, this event is a type of hydraulic shock, caused by higher than normal water pressure within the pipes.


A water hammer actually is rather an frustrating issue, but is also one that can cause problems to the system. The best solution to repair this issue is by installing a water hammer/hydraulic shock arrestor. This device can be easily installed in different types of supply lines.

Plumber-Water Hammer Arrestor

Reasons For Water Hammer In Your Pipes.

Plumbers Near Me-5 Helpful Steps for Fixing Plumbing Water Hammer Problems

This hydraulic shock effect of water hammers can be the most usual noise issue in a system. It generally takes place when some home appliances or faucets rapidly turned off the water flow.


The speed at which water flow is stopped is what brings about those shock-waves which makes the supply lines bang against each other and framing members such as floor joints and wall studs or on each other.

This issue can additionally arise from other home appliances or fixtures, such as dish-washing machines and washing machines. These cleaning units generally include solenoid shutoffs which shuts off water flow extremely fast such that it goes from on to off within a second.


Although these suggestions may be of good value, the hammer issue may be more than it may appear. Need this done right the very first time? If so, an emergency plumber will be your best choice to manage this kind of issue.

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A Standard Remedy for Dealing With A Water Hammer

Older dwellings generally have supply of water lines with pipe fittings referred to as chambers. These chambers are located on hot and cold water lines near each inlet valve or faucet.


The chambers are rarely noticeable, other than where the room might be incomplete such as in utility rooms. Or else, the chambers are concealed within wall surfaces along various other plumbing lines.

Plumber-Basic Components of a Plumbing Fixture

When water flows under high pressure and speed, the duty of these air chambers are to act as shock absorbers. Essentially, the air compresses whereas water doesn’t. As such, the air in the chamber is compressed by the water pressure, making the water pressure stop once the faucet or appliance switches off the water flow rapidly.


Shock waves from the extremely pressurized water hit the extremely compressed air in the chamber rather than hitting the water pipes. For the most part, the chambers are made and mounted on-site prior to the area where the supply of water lines get to the faucets is closed off. These chambers generally have a size of around 12 inches or longer, with a similar diameter size to that of the pipes.


If makeshift chambers get loaded with water with time, the air that works as the shock absorber gets removed. It’s possible to recharge these chambers that have become full of water by just switching off the supply of water of the affected pipes and then draining all water from the pipelines. By doing so, the air is allowed to flow back again right into the chamber to load it up again.


When the water gets switched on, the air is then trapped in the chamber. If this method fails and does not work, then, it will best to install water hammer/hydraulic shock arrestors near each faucet.

Plumbing-Air Chamber Diagram

Exactly How to Use Water Hammer/Hydraulic Shock Arrestors

The most effective and lasting approach of eliminating the issue of water hammers in water lines is installing hydraulic shock arrestors on supply lines that bang.


These arrestors work like air chambers, yet they include a sealed gas or air-filled chamber. The seal is generally developed by a piston or diaphragm.


The piston or diaphragm will move in the event of a “water hammer” situation, thus taking in the shock while ensuring the gas or air and water are always divided.

Directions for Installment:.

Supplies and Devices Needed:

Listed here are the basic tools and supplies needed to install a hydraulic shock absorber:


  • Towel or pail
  • An adjustable wrench or tongue/groove pliers
  • Water hammer/hydraulic shock arrestors (their number should be as needed).
  • Plumber’s tape.


Step 1: Shut off the major water system valve.

turn the primary water supply or just the water valve leading to the dish washer, toilet, or the washing unit by using the valve near the fixture or appliance.


A lot of appliances featured two shutoffs for shutting off the water flow, one for the cold water line and another for the hot water line. Toilet have generally only one valve.


Dish washers generally have one valve on the hot water line. Merely switch the water valve clockwise till it’s securely closed. Make sure to entirely stop the water flow between the fixture or appliance and the valve.

Step 2: Separate the water system tubes.

Take a towel or pail and place under or around the work area in order to catch all water that may spill. Now, disconnect the pipe or tube that supplies water to the shutoff, appliance, or fixture valve.


The arrestors should be mounted onto either the inlet of the fixture or on the valve or the appliance outlet. It’s best to mount the arrestor closest to the fixture or appliance.


Make use of tongue/groove pliers to loosen up tight supply tubes. You can additionally utilize a wrench (variable one) to loosen up all tight compression nut that attaches the tube or hose to the valve.

Step 3: Cover the water inlet or valve male threads with plumber’s tape.

Utilize tape to wrap the water inlet or valve male threads (depending upon the area you detached the supply tubing or hose). You can utilize thread-seal or Teflon tape known as plumber’s tape. Wrap it clockwise around the threads for 3 to 4 times as well as the arrestor’s male threads the very same way.

Step 4: Mount the hydraulic shock arrestors.

Take the arrestor and thread it onto the inlet or valve while rotating the female fixture or fitting clockwise till it’s hand-tight. In case you’re dealing with compression fittings on the toilet or dish washer valve, affix the tubing of the arrestor right into each compression fitting.


Now, slide each compression ring onto the valve and thread the arrestor tubing right into the fitting while moving the ring onto the valve. Next, thread the arrestor onto the compression fitting’s nut by utilizing the  tongue/groove pliers to tighten the arrestor onto the fitting, then utilize a variable monkey wrench to tighten the nut.

Step 5: Reconnect the supply hoses or tubes.

Connect each supply of water pipe or tube to each arrestor by using the tongue/groove pliers or a variable monkey wrench to tighten them. You can now switch on water flow from where you turned it off, be it from the primary valve or the valve near the appliance. Switch the valve on till it’s entirely open.


You can now purge your toilet or run the dish washer or washing unit for a cycle to check whether the arrestors are operating properly. Check the links for any leakage and tighten up all with a wrench or pliers. Speak to a professional plumber if you encountered an problem and need help.

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