2" extra heavy to 2" pvc

Discussion in 'Illinois Plumbing Code Questions' started by Gs1, Mar 9, 2017.

  1. Gs1

    Gs1 New Member

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    Hi All, I'm a diy'er with some experience. I've cut out old extra heavy cast iron from my bathroom during a remodel. The cast was almost closed not even a screwdriver would clear it. So I'm trying to join the 2" xhci to 2" pvc. I used a shielded coupling but since the xh cast is so much thicker it distorts the metal band. I'm considering leading in a 2" soil pipe adapter. From my understanding with Illinois code a donut or compression type gasket cannot be inclosed in a wall. So I'm lost at what to do. I've had a licensed plumber look and say that's ok. But it just looks like a leak in the making. image.jpg image.jpg
     
  2. Reach4

    Reach4 Well-Known Member

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    What is the OD or circumference of the pipe you are having a problem connecting to?
     
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  4. Gs1

    Gs1 New Member

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    It's the cast iron the OD is 2.5".
     
  5. hj

    hj Moderator & Master Plumber Staff Member

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    You need the proper sized transition coupling.
     
  6. Gs1

    Gs1 New Member

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    I've been having a heck of a time trying to find one. I don't think they make one for 2" extra heavy.
     
  7. Reach4

    Reach4 Well-Known Member

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    2 inch PVC is 2.375. dang.
     
    Last edited: Mar 10, 2017
  8. Gs1

    Gs1 New Member

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    maybe I need to file down the cast ridges.
     
  9. Reach4

    Reach4 Well-Known Member

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    You got the rubber over the heavy CI despite the large pipe diameter. I don't picture a leak developing. I am not a plumber. I would leave it.


    Out of curiosity, which way is up? You could lead in PVC, and that would be easier if the second photo is the actual orientation. But still, I would not mess with it.
     
  10. Gs1

    Gs1 New Member

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    That's probably what I'll do. Though I did find a 4 band shielded coupling. I don't know if the inspector will like it.
    It's in the horizontal position.
     
  11. Master Plumber Mark

    Master Plumber Mark Master Plumber

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    it looks fine to me... if you are really worried about it, take it apart and use some silicone on
    all the joints to really make an extra waterproof seal..

    it will probably last 75 years with or without
    doing anything to it....
     
  12. Gs1

    Gs1 New Member

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    Thank you
     
  13. Gs1

    Gs1 New Member

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    I heard neoprene roofing cement works better.
     
  14. Master Plumber Mark

    Master Plumber Mark Master Plumber

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    A big glob of Pipe dope will work ok too...

    I just prefer the silicone because its 100% waterproof
     
  15. Gs1

    Gs1 New Member

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    Ok so I did use silicone it is all I had. But just a thin film. I was afraid it would make the rubber slip too much. I did replace the no hub adapter to a medium duty one and I ground down the ridges on the cast. I think I can sleep better now IMG_0264.JPG
     

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