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 Handy Steps for Correcting Water Hammer Issues in Your Plumbing

The Perfect Device to Help Solve Plumbing System Water Noises and also Water Hammer in Home Pipes

In some plumbing systems when a faucet or an automatic valve like in a washing machine ends the water too quickly, it attempts to keep going and you obtain a banging noise throughout your house. The pipes are really moving and also banging into something. This banging force can be strong enough to break pipe joints apart which could create real issues.

This phenomenon is known as a “Water Hammer” which can be fixed by placing a special air chamber device (shock arrestor) on the affected valve. This process provides the water somewhere to go because the air is compressible.


A water hammer issue can take place all of a sudden, most notably when shutting off a kitchen or restroom tap or any other faucet very quickly. It basically creates some vibrations through the  pipes which causes the hammer noises.


These vibrations are comparable to shock waves that will make fixtures, pipes and faucets to vibrate. Technically, this phenomenon is a type of hydraulic shock, caused by too much water force within the pipes.


A water hammer actually is quite an irritating issue, but is also one that can bring about damages to the system. Nonetheless, the most ideal resolution to fix this issue is by mounting a water hammer/hydraulic shock arrestor. This device can be easily mounted in different types of supply lines.

Plumber-Water Hammer Arrestor

Sources Of 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 concern in a system. When some home appliances or faucets very quickly shut off the water flow, it generally takes place.


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

This concern can additionally arise from other home appliances or fixtures, such as dish washers and also washing machines. These cleaning units generally feature solenoid valves which shuts off water flow very rapidly such that it goes from on off within a second.


Although these suggestions may be of good value, the hammer problem might be greater than it might appear. Need this done right the very first time? If so, an emergency plumber will certainly be your best option to manage this sort of problem.

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A Conventional Option for Repairing A Water Hammer

Older properties generally have water system lines with pipe fittings called chambers. These chambers are located on hot and also cold water lines near each inlet valve or faucet.


The chambers are barely visible, other than where the room may be unfinished such as in laundry room. Or else, the chambers are concealed within wall surfaces along other plumbing lines.

Plumber-Basic Components of a Plumbing Fixture

The role of these air chambers are to function as shock absorbers when water moves under high force and also rate of speed. Primarily, the air compresses whereas water does not. Thus, the air in the chamber is compressed by the water force, making the water force stop once the faucet or appliance turns off the water flow very quickly.


Shock waves from the extremely pressurized water hit the extremely pressed air in the chamber instead of hitting the water pipes. The chambers are fabricated and also set up on-site prior to the section where the water supply lines reach the faucets is closed off. These chambers generally have a length of around 12 inches or longer, with a similar diameter size to that of the pipes.


Nonetheless, if makeshift chambers get full of water with time, the air that works as the shock absorber gets eliminated. It’s possible to charge these chambers that have become filled with water by just switching off the water system of the affected pipes and then draining any water from the pipelines. By doing so, the air is allowed to flow back again right into the chamber to load it up once more.


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

Plumbing-Air Chamber Diagram

How to Utilize Water Hammer/Hydraulic Shock Arrestors

The most long-lasting and also reliable approach of removing the problem of water hammers in water lines is mounting hydraulic shock arrestors on supply lines that make sounds.


These arrestors work like air chambers, but they feature 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, therefore soaking up the shock while ensuring the gas or air and also water are always divided.

Instructions for Setup:.

Supplies and also Equipment Needed:

Listed here are the basic tools and also supplies needed to set up a hydraulic shock absorber:


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


Step 1: Shut off the major supply of water valve.

Shut the major water supply or just the water valve leading to the dishwasher, toilet, or the washing unit by using the valve near the fixture or appliance.


The majority of appliances included 2 valves for shutting off the water flow, one for the cold water line and another for the warm water line. Toilet have generally only one valve.


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

Step 2: Separate the supply of water tubes.

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


The arrestors must be set up onto either the inlet of the fixture or on the valve or the appliance outlet. It’s best to install the arrestor closest to the fixture or appliance.


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

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

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

Step 4: Set up the hydraulic shock arrestors.

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


Now, slide each compression ring onto the valve and thread the arrestor tubing right into the fitting while sliding the ring onto the valve. Next, thread the arrestor onto the compression installation’s nut by using the  tongue/groove pliers to tighten up the arrestor onto the fitting, then utilize an adjustable pipe wrench to tighten up the nut.

Step 5: Reconnect the supply hoses or tubes.

Attach each water system pipe or tube to every arrestor by using the tongue/groove pliers or an adjustable pipe wrench to tighten them. You can now switch on water flow where you turned it off, be it from the major valve or the valve near the appliance. Switch the valve on till it’s totally open.


You can flush your toilet or run the dishwasher or cleaning unit for a cycle to test whether the arrestors are operating properly. If you encountered an problem and need assistance, call a professional plumber.

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