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  1. Thread: Plumbing mystery

    by JackP
    Replies
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    1,677

    Re: Plumbing mystery

    Thanks for the responses. I have a pressure regulator in the main line in the area where I hear the noise. I wonder if the regulator could be the source of the problem? The house is forty years...
  2. Thread: Plumbing mystery

    by JackP
    Replies
    8
    Views
    1,677

    Re: Plumbing mystery

    The knocking begins before anyone gets up. In fact, the noise often wakes us up. Any running of water stops the noise and we rarely hear it during the day or evening.
  3. Thread: Plumbing mystery

    by JackP
    Replies
    8
    Views
    1,677

    Plumbing mystery

    I hope someone can offer some advice on a problem that has perplexed me for some time. I have knocking water pipes. I'm familiar with water hammer and its causes, none of which apply in my case. ...
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