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Thread: Shower w/ 3 divertor valves

  1. #1
    DIY Junior Member auldyin's Avatar
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    Sep 2011
    new westminster bc canada

    Default Shower w/ 3 divertor valves

    can any body tell me the if using a shower setup with 3 divertor valves above a standard roll rim tub is permissable two diverters are for shower heads and a centre diverter is for tub filling,what would the drain requirements be is a 1.5" tub fixture drain enough, could a tub even be used or would a floor drain be required .thanks.
    Last edited by Terry; 09-28-2011 at 09:18 AM.

  2. #2
    ACO Shower Drain Sales johnfrwhipple's Avatar
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    Jul 2009
    North Vancouver, BC
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    Auldyin you should be fine with your set up as described. You could have 10 divertors above your thermostatic control valve and you would not get any more water out of it. If you had a second thermostatic control valve for say a rain head and the other for a hand held and the tub filler you would then get to much water I think for the 1 1/2" drain line.

    Most tub's here in Vancouver that we find in high rises are piped with 1 1/2" copper overflows and ptraps. Make sure it stays clean.

    If you have the ability to upgrade the ptrap and overflow to a 2" line you will love the drain rates. My daughter's tub is plumbed like this and works great!


    jfrwhipple@gmail.com - www-no-curb.com - 604 506 6792

    Always get construction advice double checked by your local city hall. Flood Test Every Shower - Every Time.

  3. #3
    Moderator & Master Plumber hj's Avatar
    Join Date
    Aug 2004
    Cave Creek, Arizona


    If they are being used with a bathtub, ALL you can use is a 1 1/2" drain, but since you only have a single valve, it will be more than adequate.
    Licensed residential and commercial plumber

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