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    hardesja's Avatar
    hardesja Posts: 3, Reputation: 1
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    #1

    Aug 22, 2012, 04:42 AM
    Loud vibrating pipes about half the time any toilet is flushed. How to fix?
    About a month ago the flush of a toilet caused a very loud fog horn sound with lots of vibrations through the pipes (through out entire house? Not sure). I was hoping it was a strange fluke. Well, it turns out ALL the toilets will do this, upstairs and downstairs, about half the time they are flushed. The noise happens near the end of the flush, when the tank is almost full again. Since this started at the same time for every toilet I am guessing it's not a simple fix inside the toilet (could all 3 develop the same problem at the same time? ). Any ideas as to what is going on and how I can fix it. The noise always wakes my kids up during naps/nighttime.
    hkstroud's Avatar
    hkstroud Posts: 11,929, Reputation: 899
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    #2

    Aug 22, 2012, 05:05 AM
    Do you have a PRV (pressure regulating valve)?
    speedball1's Avatar
    speedball1 Posts: 29,301, Reputation: 1939
    Eternal Plumber
    		  
    #3

    Aug 22, 2012, 07:14 AM
    What ballcocks are in your toilets? Let me know, Tom
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    hardesja's Avatar
    hardesja Posts: 3, Reputation: 1
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    #4

    Aug 22, 2012, 05:28 PM
    hkstroud, I don't think there is a pressure regulating valve, not that I see anyway. Tom (speedball1) they are the second kind with the chain.
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    hkstroud Posts: 11,929, Reputation: 899
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    #5

    Aug 22, 2012, 07:36 PM
    Next time the noise occurs, very quickly open a cold water faucet completely. See if it makes the noise stop.
    hardesja's Avatar
    hardesja Posts: 3, Reputation: 1
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    #6

    Aug 23, 2012, 07:17 AM
    Will do. The noise only occurs for a few seconds sometimes, but I will try.

    Third flush was a charm. Yes, turning on the cold water stopped the noise right away.
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