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Thread: Shower head goes Gulp Drip Gulp Drip

  1. #1
    I&C Engineer (mostly WWTP) Lakee911's Avatar
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    Default Shower head goes Gulp Drip Gulp Drip

    Recently remodeled my bathroom and I installed a rainfall shower head from the ceiling. I plugged the tub spout connection on the shower valve and then ran the shower connection up into the attic and over and down to 10in rainfall shower head. When we're done showering, for about an hour the head gulps and girgles and drips. Drips into the shower, so that's ok, but its just annoying. Anyway to alleviate this? Special valve to let air in when water pressure is not there?

    Thanks,
    Jason

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    Master Plumber Dunbar Plumbing's Avatar
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    That description mimics vaccum holding the water inside the pipe leading to the showerhead. If you would of left the tub spout in w/diverter, once the diverter released the water would drop out of the shower head/pipe and the noise would instantly cease.
    Read what the end of this sentence means.

  3. #3
    I&C Engineer (mostly WWTP) Lakee911's Avatar
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    Yes, that's exactly what it was. This is in a stand alone shower. There is no tub spout w/ diverter! So what could I have done?

    Thx,
    Jason

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    DIY Senior Member plumguy's Avatar
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    Did you pitch the water line in the attic towards the shower head?

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    I&C Engineer (mostly WWTP) Lakee911's Avatar
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    Uhmmm .... no I'm guessing that I should have. How much pitch would be necessary?

    Do you think there is any risk of freezing? I plan on insulating the pipe pretty well in the attic before winter.

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    Retired Defense Industry Engineer jadnashua's Avatar
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    If the pipe is right next to the ceiling and well insulated, probably no (unless you keep your house really cold). My unprofessional opinion.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

  7. #7
    Moderator & Master Plumber hj's Avatar
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    Default gulp

    PItching the pipe would not change the drip/gulp. That is caused by the showerhead being almost exactly level, so water cannot drain until air enters the head, but the air has to "force" its way through the water, so a little air goes in "gulp" and a little water comes out "drip". As the amount of water in the head is reduced the air can enter easier and the gulps will become more frequent and larger until it reaches a point where the last water can run out. If the head had been on an angle then the water could flow out of the low end while drawing air in at the high side.

  8. #8
    DIY Senior Member plumguy's Avatar
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    Yes, you need to pitch the pipe..any pitch will do. If this pipe is in an unheated space with standing water in it...it will freeze. Then the verical part of the pipe that is exposed in the attic is what you will have to protect. Just regular pipe insulation is not sufficient and of course it depends on you're location and winters.This problem would bother me more than the gulping and dripping..which I think the solution to that problem is just above this post.

  9. #9
    I&C Engineer (mostly WWTP) Lakee911's Avatar
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    If I swing the showerhead to the side a lot of water will drain out of the head. Wether or not this drains the pipe in the attic, I do not know. The pipe is about 1/2 in above the ceiling and only in the attic for 15 or so inches. I think I'll build a cardboard box around it and leave a slight air gap between the ceiling and pipe place a lot of insulation around it.

    Thanks for thee replies. This board is a great resource.

    Jason

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