bottle trap

Discussion in 'Canadian Plumbing Code Questions' started by gardner, Nov 27, 2008.

  1. gardner

    gardner DIY Senior Member

    Messages:
    221
    Location:
    Ontario
    So my new sink is installed and plumbed and seems to be okay. The new sink's tailpiece is quite close to the wall and consequently there is very little -- actually not really enough -- room for the trap. For now I have the trap running outward and looped back so it can be used, but it looks weird.

    I have two possibilities to get the installation fixed up -- I can move the trap adapter over to the side, or I can use a bottle trap.

    I'm not sure how guys who deal with them feel about bottle traps. The ones I can find seem to be pretty pricey. I want to spend not more that $50 on a reasonably decent one -- not a designer one, just something durable.

    Any opinions whether bottle traps ought to be avoided for any reason?

    Any suggestions of a cheap serviceable model to look at?

    Thanks!
  2. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Messages:
    22,129
    Location:
    New England
    I'd just leave what you have there...a bottle trap isn't self-cleaning, if I understand how they work. A standard p-trap essentially is as long as the flow is decent.
  3. jimbo

    jimbo Plumber

    Messages:
    8,997
    Location:
    San Diego
    Depending on how it is constructed, bottle traps are generally not code approved. 1004.0 of the CA plumbing code says "...bottle traps shall be installed ONLY for special conditions" . It would be up to your inspector as to whether you qualify as a "special condition?"
  4. Redwood

    Redwood Master Plumber

    Messages:
    7,450
    Location:
    Connecticut
    Bottle traps are not allowed by many codes.
    They rely on an internal partition to provide the trap seal.
    There is no method of inspection that will reveal whether or not this partition has corroded away and is allowing dangerous sewer gases to enter your home.

    The method you describe of going past and swiveling the trap around to fit is acceptable. You could move the drain in the wall over or you may even add an elbow to it to allow a better fit.
  5. Terry

    Terry Administrator Staff Member

    Messages:
    15,118
    Location:
    Bothell, Washington
    Maybe this is a dumb question, but how much of the trap arm toward the wall was cut off, and you still didn't have enough room to connect it?

    Your sink drain must be right up against the wall if you can't cut the trap enough to install it.
    Last edited: Jul 11, 2010
  6. gardner

    gardner DIY Senior Member

    Messages:
    221
    Location:
    Ontario
    Hi Terry,

    The tailpiece comes out about 5 inches from the wall on my Crane sink. The sleeker Toto wall mount that I had my eye on has the drain barely over 3 inches from the wall.

    My new trap adapter (remember the 1-1/4 banded coupling thread?) comes proud of the wall by over 3/4. The initial bend in the trap arm needs about 2 inches, the trap itself is over 3. There is just not enough space for the trap between the tailpiece and the trap adapter.

    I didn't cut the trap arm at all, thankfully, as the trap itself doesn't even fit. The trap arm is just long enough to reach the trap after swiveling it the other way around.

    I just rummaged out the Ontario code and they won't allow bottle traps here. It seems like I couldn't get one if I wanted it. Maybe there is room for someone to invent a bottle-like trap (a very narrow U-bend, with a removable shroud, say) that would meet the code requirements but fit the compact installs.

    The backward loop looks dumb, but will have to do until I get my bum in gear to swap out the sink and re-arrange everything. I needed to get this bathroom in service so I will leave that until I come up with something else.
    Last edited by a moderator: Nov 27, 2008
  7. gardner

    gardner DIY Senior Member

    Messages:
    221
    Location:
    Ontario
    This is the Toto Sink I had in mind:

    http://www.totousa.com/admin/upload/pdfspc/s-lt650g-1107.pdf

    and I can't see how you could connect it to the rough-ins they show without using a bottle trap.

    To put this in my place, I will have to mount the sink over from the drain to allow the trap to run parallel to the wall and move one of the supplies over so the supply stub doesn't interfere with the drain.

    It looks pretty though, and fits in the compact space I have to work with.

    Last edited: Nov 27, 2008
  8. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Messages:
    22,129
    Location:
    New England
    In a week or so, you won't notice it, and neither will your guests...sometimes you've got to do what you've got to do. It will work fine.
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