Pressure loop for two sets of body sprays

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by DavidTu, Jul 18, 2014.

  1. DavidTu

    DavidTu Member

    Messages:
    239
    Location:
    Seattle, WA
    How should a pressure loop be laid out for case where valve is in back wall, and two sets of two body sprays are opposing each other on both side walls?

    Can we run a loop in the back wall and run feeders off to sprays on each side? If so would we run four direct feeders or two that split between the two sprays on each side? If split, would they have to have a sub-loop tying them together or just a tee?

    Update:
    Guess should ask about running big loop around all four sprays; but maybe this picture is an answer? http://terrylove.com/forums/index.php?attachments/one-wall_small-jpg.2081/


    Functionally, we want what is pictured here but with 2nd set of 2 sprays on right side (total 4 sprays): http://www.maineshowerdoor.com/Shower Valves/Typical Valve.jpg

    The valve is AS R540 fed by 3/4" pex. Should connections coming out stay 3/4" to each outlet or 1/2" as that's what the individual fixtures actually have as input?
    Last edited: Jul 18, 2014
  2. johnfrwhipple

    johnfrwhipple Bathroom Design & Build - North Vancouver, B.C.

    Messages:
    4,406
    Location:
    North Vancouver, BC
    You can always try and hook them up "Red Neck Style"....

    Run the bitches and find out exactly...

    [​IMG]
    Red Neck Shower - Photo Source

    That's my shower as it sits today. Looking into these exact questions of yours as we speak. I'm trying a different set up this Sunday...

    I have in the Shower and Bathroom section this discussion on the go right now.

    Shower Design - How to Lay out six body jets
  3. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    26,825
    Location:
    Cave Creek, Arizona
    Those two loops on either side look nice and take more time and material, but do absolutely NOTHING to improve the flow of the heads A simple tee in a vertical line will do the same thing. After all, when you remove the two 'outside" risers, that is what you are actually have.
  4. johnfrwhipple

    johnfrwhipple Bathroom Design & Build - North Vancouver, B.C.

    Messages:
    4,406
    Location:
    North Vancouver, BC
    HJ in my picture above I'm getting about 10 psi out of the two lower jets (top on has gauge now). When I had three the pressure seemed most in the lowest body jet... Lucky for me that's the one that washes my junk! LOL
  5. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    26,825
    Location:
    Cave Creek, Arizona
    The bottom will have the most pressure because it is the lowest one, but it has NOTHING to do with a "balancing loop"
  6. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    26,825
    Location:
    Cave Creek, Arizona
    You are not improving your pressure by using PEX, however, especially with the flow restricting insert fittings.
  7. johnfrwhipple

    johnfrwhipple Bathroom Design & Build - North Vancouver, B.C.

    Messages:
    4,406
    Location:
    North Vancouver, BC

    Thanks HJ - that makes the work I saw yesterday make a little more sense.
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