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  1. #14
    Join Date
    Oct 2014
    Location
    Saint Pail, Minnesota
    Posts
    705
    Post Likes
    I’ve seen furnace and boiler condensate eat through copper, why they used copper beats me. I’d expect it to eat through cast iron without dilution. Your home is built in 2000 I wouldn’t expect there to be cast iron out to the city sewer but who knows when that infrastructure was put into place.

    But a iron pipe fitting at the hardware store and put it inline with the pvc. It may take a couple years, but it’s a cheap experiment.

  2. #15
    Join Date
    May 2018
    Posts
    79
    Post Likes
    Thread Starter
    I was thinking of just filling a 2 inch PVC pipe with limestone and adding it in between the line and drain.

  3. #16
    Join Date
    May 2018
    Posts
    79
    Post Likes
    Thread Starter
    Just ordered this:
    https://www.homedepot.com/p/JJM-NBT-...2009/301439478

    Seems like cheap insurance to make sure cast iron drain doesn’t corrode.

  4. #17
    Join Date
    May 2018
    Posts
    79
    Post Likes
    Thread Starter
    I did confirm—the floor drain is cast iron even though the house was built in 2000.

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