MT Projects Controls Corp - Project Management, Scheduling - Miami, FL - USA

Do You Have Noisy Pipes?

neighborYesterday my neighbor came to us complaining… he said that, for a while now, he has been hearing  some strange noises throughout the day somewhere at the first floor. We were wondering where this noise can come from…?!

I know that pipes in some cases may be “noisy”. You can hear all kinds of noises during the operation of heating and running water. From clogged sounds (low-frequency), like hammer blows, to the “sharp” (high frequency) like screeching loud, everything has an explanation, nothing happens without a reason.

Why these noises?

What Causes the Noise

What Causes the Noise

Water pipe clang and clatter may be due to cracks, air bubbles formed inside the pipe or increased water pressure in above the limit values.

How do we fix them?

1. Sometimes a water hammer can occur when a pipe-mounting strap is loose. Fixing pipes using pipe-mounting straps that are embedded in the wall is the simplest solution. Pipes should be fixed to the wall in the way that at every 70 – 94 inch to have a grip for pipes mounted horizontally and 94 -118 inch for those mounted on vertical route. Once these tips followed, normally the problems with noise or vibration dissapear. One last tip on fixing the straps would be that, when using copper pipe installation you never use galvanized straps. These two materials are incompatible, interacting negatively over time when they are put in contact. When different metals contact one another, electrolysis can occur, which can lead to a plumbing leak.

2. Sharp screeching noise typically occurs in pipes due to warm or hot water. Due to the high temperature water pipes expand and move to the metal strap and rub it, causing the “crunch” sounds of metal on metal. The solution in this case is putting a rubber sleeve between pipe and metal strap. If made of plastic pipes really need to leave expansion space when you tightly connected the straps.

3. Another cause is the formation of bubbles in the pipes (small air volume inside the large volume of water that flows through it). Valve opening will soon eliminate these “intruders” and restore a continuous and silent flow of water. To end a water hammer, you need to replenish all the air chambers with air.
The water hammer noise occurs when water pressure in pipes exceeds limit values for which the facility was designed. The remedy in this case is represented by mounting a water-pressure regulator or pressure-reducing valve. The average house pressure is 45 PSI. Most modern homes have a regulator mounted at the location where the main water supply enters the home. If you already have a regulator, use a screwdriver or wrench to adjust it so that the pressure doesn’t exceed 50 PSI.

So knowing those tips I fixed my “problem”. The neighbour doesn’t complain anymore!

By Mihaela Tomulescu

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