High pitch humming/vibration/whining

Discussion in 'Plumbing Forum, Professional & DIY Advice, Tips & ' started by noviceplumber2, Mar 28, 2009.

  1. noviceplumber2

    noviceplumber2 New Member

    Messages:
    4
    I have a high pitch humming or whining sound when I turn water on or off in my house. When I turn it on, the sound is less loud, but when I turn the water off I get this high pitch humming sound that swells into a louder sound before getting silent again. It seems like a vibration in the pipes.

    Best I can tell is that is is coming from near the main water line running from the street into my basement. In the past I've been able to stuff some paper towels around the pipe where it comes through the foundation to lessen the vibration and the sound goes away.

    It has been gone for a couple years now, but is back...no luck getting it to go away. I can make the sound go away if I turn off the main water valve into the house. In fact it stops immediately even if in "mid-sound". Of course, I need that open to have water in the house!

    Any suggestions? Thanks in advance. These forums are a great help.
  2. Mad Plumber

    Mad Plumber Mad Skills

    Messages:
    222
    It may be a pressure thing going bad.

    But first, turn off all the tojlerts in th ehosue.
    It cuold be a bad filling valve.

    Or it coudl be a bad prrerres valve on the incmome.ngn,

    This is good link.
    Titanic and Tuba toilets
    Last edited: Mar 28, 2009
  3. cwhyu2

    cwhyu2 Consultant

    Messages:
    1,338
    Location:
    Cincinnati OH
    You might have a pressure reducing valve going bad.To check your pressure
    you need to get a pressure gauge $10 at your local hardware.
    Any pressure above 80PSI is to high,that could make your toilet fill valves
    run.And cause the sound you are hearing.Attach the gauge to a hose
    faucet or laundry tray faucet.And it will tell your pressure.
  4. Redwood

    Redwood Master Plumber

    Messages:
    7,452
    Location:
    Connecticut
    Have you got something that looks like this either where the line comes into your house or, in the outside meter box if you have one...

    [​IMG]

    Its the pressure thingy Mad Plumber is talking about...
  5. noviceplumber2

    noviceplumber2 New Member

    Messages:
    4
    Yes I do - tried to up the pressure a bit

    by turning about a turn and 1/4 clockwise. It seemed to take care of it. It's a Watts valve...anyone know how much the pressure goes up by turning the nut that much? Not a real noticeable change in the faucets.

    I have noticed that one of our faucets upstairs still generates the whining noise, although much less now than before I changed the pressure.
  6. cwhyu2

    cwhyu2 Consultant

    Messages:
    1,338
    Location:
    Cincinnati OH
    Most PRV are set at the factory @55PSI,if you adjust it the only way to
    know the pressure is to check it with a pressure gauge.
  7. noviceplumber2

    noviceplumber2 New Member

    Messages:
    4
    Thanks....sound has returned now occasionally

    Seems to come and go. Mostly when water is turned on for the 1st time in a day. Anyone know how much it would usually cost to replace that pressure valve? I assume a plumber would have to cut it out and replace new, right?
  8. cwhyu2

    cwhyu2 Consultant

    Messages:
    1,338
    Location:
    Cincinnati OH
    Takes about an hour for skilled plumber,Price a Watts 25AUB pressure reducing
    valve,That should give you an idea of what it cost.
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