bathtub overflow configuration?

Discussion in 'Shower & Bathtub Forum & Blog' started by jasaxon1900, Mar 29, 2012.

  1. jasaxon1900

    jasaxon1900 New Member

    Mar 21, 2012
    ontario, canada
    On the new waste and overflow drain that I am installing there are 3 possible configurations (direct, indirect down, and indirect rear). I am installing new dwv lines to the main stack so I can place the trap below in any location (open basement) so it is possible for me to use either the 'direct' or the 'indirect down' configuration.
    Is there one that performs better than the other? It would seem to me that the 'direct' would be preferable as the water is going directly down to the trap and out as opposed to horizontal and then down to the trap.
    Thanks in advance for all your help and advice!

    tub drain.JPG
    Last edited: Mar 29, 2012
  2. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Sep 2, 2004
    Retired Systems engineer for defense industry.
    New England
    If you get a clog, the most common way to snake a tub drain is to go through the overflow. This would only work with the indirect configuration. On most drains, you can't get the grid out of the drain without lots of trouble, but the overflow cap usually comes off easily.
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  4. jasaxon1900

    jasaxon1900 New Member

    Mar 21, 2012
    ontario, canada
    The p-trap for the tub in the basement has a clean-out in it - does that matter?
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