Combination Wye On Its Back/Side

Discussion in 'Plumbing Forum, Professional & DIY Advice, Tips & ' started by philwgreen, Apr 25, 2013.

  1. philwgreen

    philwgreen New Member

    Messages:
    26
    Location:
    Dallas, TX
    I was underneath the house the other day and noticed a couple of combination wyes in the plumbing on their backs/sides.

    I know there are differences on which fittings can be on their sides/back and I was curious if these were done correctly. We moved into the house about a year and a half ago and my best guess is that these pipes were redone about 5 years ago - but based on the previous owner's other handiwork I wouldn't be surprised if the entire DWV system is wacky.

    First one is the drain from a bathroom sink. The vertical continues as a vent through the roof.

    On the second, if you can look past the mess of romex (another project for another day) two toilets connect into the main stack with a combination wye on its side.

    bath_wye.jpg
    toilet_wye.jpg
  2. johnjh2o1

    johnjh2o1 Plumbing Contractor for 49 years

    Messages:
    1,142
    Location:
    South*East
    A combo is the same as a Y and 45. Perfectly fine.

    John
  3. cacher_chick

    cacher_chick Test, Don't Guess!

    Messages:
    3,237
    Location:
    Land of Cheese
    The combos are fine. A sanitary tee would be improper.

    The strapping used is a bit hokey, as is the NM wire that could use some cable staples.
  4. asktom

    asktom Member

    Messages:
    521
    Location:
    Victor, MT
    The fittings are installed correctly.
  5. philwgreen

    philwgreen New Member

    Messages:
    26
    Location:
    Dallas, TX
    Thanks for the replies!

    If you think the strapping and NM look hokey - you don't even want to see the rest of the basement! We gutted the upstairs and started over - it was bad.
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