hot water vibrates

Discussion in 'Shower & Bathtub Forum & Blog' started by cygnus, Mar 4, 2007.

  1. cygnus

    cygnus New Member

    Mar 4, 2007
    When I turn on the hot water in my upstairs shower, the pipes start to vibrate momentarily until the valve is wide open.
    The cold water tap doesn't do that, nor does the sink's hot water valve in the same bathroom.
    The hot water anywhere else in the house doesn't do it either.... just the shower.

    I found out about "hammering" when starting with google, but mine is the opposite problem - it's not when turning the water off.

    I don't know if it's a pressure problem, but I did notice that about the same time this started, the faucet in the kitchen downstairs leaks water when the shower is turned on.

    I do have a gas water heater, and drained it after reading an article about sediment causing air bubbles in the lines, but that didn't help.

    What else can I try?
    I've replaced the guts inside the shower taps when I redid the wall tiles a few months ago because they were shot - the house is 20 years old.
  2. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Sep 2, 2004
    Retired Systems engineer for defense industry.
    New England
    A loose washer in a valve can cause that type of vibration.
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  4. cygnus

    cygnus New Member

    Mar 4, 2007
    jadnashua, I forgot to say thanks.

    I think you were right. There was barely any washer left - crushed to oblivion. I can't believe it deteriorated that fast.
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