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Thread: P-trap for laundry, a little lost

  1. #16
    Forum Admin, Expert Plumber Terry's Avatar
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    All I see is a wall with a fitting coming out of the wall at the correct height.
    Are you sure there isn't a vent and a p-trap with standpipe behind that wall already?
    That pretty much looks like many other waster installs.
    Are there any pipes and valves that you can see on the other side of that wall?


  2. #17
    DIY Junior Member syn3rgy's Avatar
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    yes, the pipe goes through the wall, and just drops vertical a bit, then goes into a horizontal pipe that leads to the drain.

  3. #18
    Test, Don't Guess! cacher_chick's Avatar
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    It would not be in anyone's interest to suggest how to do it until they could see where the drains and vents are in the wall, and what fittings are already in place. The plumbing codes are quite specific as to what is allowed, but we cannot see what is in your wall, which would determine how best to proceed in your house.

  4. #19
    DIY Junior Member syn3rgy's Avatar
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    Name:  CAM00244[1].jpg
Views: 49
Size:  26.5 KB
    this is what the other side of the wall looks like. This pipe runs straight across to the drain, thats all there is.

  5. #20
    DIY Junior Member syn3rgy's Avatar
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    Could I possibly put a p trap on the other side of the wall??

  6. #21
    Forum Admin, Expert Plumber Terry's Avatar
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    The p-trap should be on this side.
    The santee on it's back gets replaced with a wye or combo fitting, then over that, a santee.
    Above the santee will be either a vent through the roof, or an AAV.
    Off the side of the santee, a trap arm and p-trap, with standpipe at least 18"



    This should have been 2.0" pipe. But if all you have is 1.5", it will have to do.

  7. #22
    DIY Junior Member syn3rgy's Avatar
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    Name:  CAM00246[1].jpg
Views: 36
Size:  27.8 KB So, I drew this out quickly, is this kind of what you are talking about?

  8. #23
    Forum Admin, Expert Plumber Terry's Avatar
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    Yup!

  9. #24
    DIY Junior Member syn3rgy's Avatar
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    thank you very much for your help. At least now I know what to do without flooding the place! lol

  10. #25
    DIY Junior Member syn3rgy's Avatar
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    Well, I got into it today, and IT WORKS. lol. Only problem I have right now, is one of those stupid rubber couplings has like a pinhole leak in it, but I think it might just be because it worn out, they were filled with dirt, etc. Nice to get that sewer smell gone. And thank god I didn't make any drastic errors, seeing as how it's a holiday here today, and I would have been SOL for a day.

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