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Thread: PVC pipe into cast iron waist pipe

  1. #1

    Default PVC pipe into cast iron waist pipe

    Ok, I am replacing my existing drain pipe from my kitchen sink (from galvanized to PVC). My question is how do I get the galvanized pipe put of the cast iron pipe, and then what is the proper way secure into the cast iron waist pipe. Any suggestions will probably save me hours of work.

    The galvanized pipe right know is stuck into the cast pipe with some sort of hard filler around it to seal it and lock it in.

  2. #2
    DIY Member ddmoit's Avatar
    Join Date
    Jan 2007
    SE Tennessee


    If your galvanized pipe is going into a hub connected to the iron pipe, and the hub and galvanized pipe are in pretty good shape in that vicinity, I would cut the galvanized pipe a few inches before the hub and connect the PVC pipe to it with a Fernco coupler. That's my amateur opinion.
    Dan in SE Tennessee

  3. #3
    Retired Defense Industry Engineer jadnashua's Avatar
    Join Date
    Sep 2004
    New England


    It's probably a threaded connection...use a big wrench, then put in a pvc threaded connection and continue to the sink.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014


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