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Old 10-24-2016, 10:42 AM   #1
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Pipes rattle when toilets or washing machine are filling


When the washing machine or any of the 5 toilet tanks are filling, the pipes rattle. This also occurs when my son's shower is in use. The washing machine and my son's shower are on the top floor, but the toilets are on all 3 levels of the house. If two of these are in use at the same time, the rattling becomes violent!

We have tried shutting off the water and opening all of the faucets and flushing all of the toilets, then turning the water back on - in fact, we did this 5 times but the problem persists.

Is this a water pressure issue? Too much or too little?

Any ideas?
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Old 10-24-2016, 11:09 AM   #2
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Re: Pipes rattle when toilets or washing machine are filling


That's commonly called WATER HAMMER, it is usually caused by loose plumbing somewhere in the structure.

Ideally the builder used straps to anchor the pipes to the joists, but occasionally forgets to, or they come loose after a few years.

Your best plan is to try to isolate the area it is in, and search for the offensive pipe, and strap it down.

Easy to say, sometimes hard to do, because you might need to open some walls, or other places in the basement ceiling.


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Old 10-24-2016, 03:51 PM   #3
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Re: Pipes rattle when toilets or washing machine are filling


Whats your water pressure coming into the house. Can be checked at any hose bib .. Like washing machine or outside faucet.

Is there a water pressure reducing valve installed.
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Old 10-24-2016, 04:45 PM   #4
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Re: Pipes rattle when toilets or washing machine are filling


http://www.homedepot.com/p/Winters-I...13LF/205389434
The water pressure is the first thing I would check.
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Old 10-25-2016, 06:22 AM   #5
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Re: Pipes rattle when toilets or washing machine are filling


Thanks to all for your suggestions. There is a water pressure governor installed, but it's hard to get to to read. What is the proper psi?
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Old 10-26-2016, 07:22 PM   #6
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Re: Pipes rattle when toilets or washing machine are filling


Quote:
Originally Posted by ftrunzo View Post
Thanks to all for your suggestions. There is a water pressure governor installed, but it's hard to get to to read. What is the proper psi?
Around 50-60 psi is the average range. Anything over 80psi should be addressed by prv.
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Old 10-26-2016, 07:23 PM   #7
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Re: Pipes rattle when toilets or washing machine are filling


If your water pressure is too high or too low, you can try adjusting it. They can fail or need to be cleaned/replaced/rebuilt. Just a little sediment in the inlet screen can affect the pressure.

What is your incoming pressure?
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