Sudden low pressure after sink installation

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by Dawn Cockrell, Oct 26, 2008.

  1. Dawn Cockrell

    Dawn Cockrell New Member

    Oct 26, 2008
    We replaced a kitchen faucet and immediately had water pressure decrease significantly. Hot water pressure continues to be higher than cold water... Any ideas?
    Dawn Cockrell
  2. Redwood

    Redwood Master Plumber

    Dec 15, 2007
    Service Plumber
    If the overall pressure hot & cold has decreased at just the replaced faucet check the aerator an clean it as needed.

    Now the coldt water has decreased lets look towards the valve that you shut off to isolate the cold while changing the faucet. Is it all the way open? If it is a angle stop under the sink pull it apart and look for a piece of the washer blocking the supply tube or, outlet of the valve.
    Last edited: Oct 27, 2008
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  4. krow

    krow Plumber

    Feb 11, 2008
    Ontario, Canada
    If the valves are fully open and there are no blockages, if you used the braided supply tubes, make sure it did not kink.
  5. Howard Emerson

    Howard Emerson I teach guitar:You call that a job?

    Apr 28, 2008
    I teach guitar:You call that a job?
    Huntington Station, NY

    And if you follow the other's advice and still have lower pressure on the cold side, then you'll have to see if a small piece of the rubber washer lodged itself inside the supply tube................

    Been there, done that, reemed it out with some .080 weed-whacker line. Had to take apart the faucet at the valve in my case, but it worked out just fine.

    Best of luck.

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