Is this an acceptable P-Trap design for a shower drain?

Discussion in 'Shower & Bathtub Forum & Blog' started by El Jefe, Jun 13, 2014.

  1. El Jefe

    El Jefe New Member

    Messages:
    19
    Location:
    Seattle, Washington
    I have an existing 2" waste line from a shower. The previous drain was centered, but we're putting in a Kerdi-Line linear drain (with offset drain hole). The drain hole will be only a couple inches from the current position of the waste line. I grabbed a couple pieces for a P-trap while I was Lowe's today that I thought would allow me to tie the new p-trap directly into the existing line without having to move it or try to hard.

    Here's a picture. The penciled "x" is where I estimate the drain hole will be (don't have the drain just yet, but this is based on dimensions from product manuals). The P-Trap flows the opposite direction of the waste line (which flows to the right in this picture under the floor and wall). Is it ok to have the direction turn around like this, or should the p-trap flow in the same direction as the long run for the waste line? If needed I can just spin the p-trap around to the other side and have the same parallel position, but I'd have to work the connections a foot or so further under the floor where I don't have easy access. However, if I do it the way I've pictured, I'll be able to cut, clean and glue everything a lot easier.

    IMG_2682.jpg

    Hope that all made sense.
    Last edited: Jun 13, 2014
  2. Tom Sawyer

    Tom Sawyer In the Trades

    Messages:
    3,265
    Location:
    Maine
    It's fine. That's why p traps are adjustable.
  3. eurob

    eurob master tile and stone installer

    Messages:
    828
    Location:
    Montreal
    I wouldn't use any threaded p-traps for your application , only glued one .
  4. El Jefe

    El Jefe New Member

    Messages:
    19
    Location:
    Seattle, Washington
    Sounds good. Why will the threaded kind not work as well?
  5. Vegas_sparky

    Vegas_sparky Digital Billy

    Messages:
    378
    Location:
    LV,NV/ Nowhere,UT
    I believe if they're threaded, they need to be accessible. If its buried, use the glue type.
  6. El Jefe

    El Jefe New Member

    Messages:
    19
    Location:
    Seattle, Washington
    Got it - thanks!
  7. Terry

    Terry Administrator Staff Member

    Messages:
    15,289
    Location:
    Bothell, Washington
    If it's not accessible, it should be a glued trap. Those threaded traps are a problem wating to happen.

    The fitting and angle are fine.
  8. El Jefe

    El Jefe New Member

    Messages:
    19
    Location:
    Seattle, Washington
    Excellent - thanks for the fast help!
  9. El Jefe

    El Jefe New Member

    Messages:
    19
    Location:
    Seattle, Washington
    Bought the parts to do a glued trap. No threads :)
  10. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Messages:
    22,262
    Location:
    New England
    Just be careful and measure twice...dry fitting the pieces together will not be accurate since once the cement is applied, the pipe and pieces will fit further into the sockets than they would just dry...you need to measure to get it right, and with cement, you get one chance to put it together.
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