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Thread: Pressure Dropped in shower head, not tub faucet

  1. #1
    DIY Junior Member sfwill68's Avatar
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    May 2010
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    Madison, WI
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    Default Pressure Dropped in shower head, not tub faucet

    Some facts behind the story:

    1. I turned off the toilet and sink valves to remove these fixtures for tiling the floor. During the 10 days of the project the tub faucet was used a few times, but not the shower head.

    2. Thinking the problem was lime build up in the head due to letting it dry out for several days, I did two CLR treatments - no improvement.

    3. Toilet, sink and tub all still have full pressure, but the shower has pitiful pressure.

    QUESTIONS:
    1. Is it possible that there's some sort of build up in the pipe above the tub faucet?

    2. If yes, is there any way to flush a cleaning solution backward through the pipes to clean it out?

    3. What else should I look at?

  2. #2
    Plumber krow's Avatar
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    Feb 2008
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    Ontario, Canada
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    Remove the shower head and flush the riser, then check for any visible debris in the sower head.

    Install and check pressure again.

  3. #3
    Moderator & Master Plumber hj's Avatar
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    Aug 2004
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    did you just unscrew the head, or did you also remove its attachment to the shower arm. I had one a week ago, that cost the customer a high service charge for me to remove that piece and scrape the debris out of its screen.

  4. #4
    DIY Member yngwie_69's Avatar
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    Sep 2009
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    Any Time you shut valves off, its a good idea to remove the Aerators and flush the line out first

  5. #5
    DIY Junior Member django5's Avatar
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    May 2011
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    Overland Park, KS
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    I am having a similar problem as the OP and posted a thread about this----did you find a solution?

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