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    robbber's Avatar
    robbber Posts: 2, Reputation: 1
    New Member
    		  
    #1

    Dec 29, 2009, 07:16 PM
    Put pipe thread on abs to cast iron pipe threads?
    I have a 1-1/2" cast iron show drain. will attach to 1-1/2" abs male threaded coupling. Do I need to put pipe thread or plummers puty on the threads?
    mygirlsdad77's Avatar
    mygirlsdad77 Posts: 5,713, Reputation: 339
    Plumbing Expert
    		  
    #2

    Dec 29, 2009, 07:35 PM

    Plumbers putty is no good for threaded joints. When you have plastic(abs,pvc) threaded joints, you need to use teflon tape on the threaded portion. Do not use liquid pipe dope, or sealant. Teflon tape only(on plastic threads).
    robbber's Avatar
    robbber Posts: 2, Reputation: 1
    New Member
    		  
    #3

    Dec 29, 2009, 11:38 PM
    OK great... so put on teflon tape on the male abs threads which will thread into cast iron... thanks.
    mygirlsdad77's Avatar
    mygirlsdad77 Posts: 5,713, Reputation: 339
    Plumbing Expert
    		  
    #4

    Dec 30, 2009, 04:55 PM

    Yep you do that and you should be all set. Make sure that the cast iron female threads are clean and you'll be just fine
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