Need Help with Drain Pipe

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by jk60, Feb 12, 2007.

  1. jk60

    jk60 Engineer

    Joined:
    Nov 20, 2005
    Occupation:
    Engineer
    Location:
    San Francisco
    I can sure use some advice on a problem I have with a drain pipe. A rough sketch is shown below. At a point where the cast iron pipe joins the "T" it's partially rusted through. I would like to replace it, but the pipe will probably break at the rusted point leaving the threaded portion inside the "T". Any advice on what is the best way to resolve this problem will be appreciated.
     

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  2. kordts

    kordts In the Trades

    Joined:
    Oct 15, 2005
    Occupation:
    industrial service plumbing foreman
    Location:
    exurban Chicago
    Cut off the old pipe and unscrew it, if any thread stays in the hub, peel it out and re-tap it, then use a pvc male adapter and go from there.
     
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