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Thread: ABS to PVC Septic Connections

  1. #1
    sea-bee chuck b's Avatar
    Join Date
    Jan 2011
    Location
    levering, michigan
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    72

    Default ABS to PVC Septic Connections

    Need to connect 3" PVC to a 3" black ABS pipe which exits an old septic system at a newly acquired cottage.

    The pipe run is through a open crawl space under the cottage. Do I use SCH 30 or SCH 40 pipe. Advantages or disadvantages of either?

    Also, would the 3" Black ABS pipe match SCH 30 or 40? I will of course be making my rough drain connections throughout the cabin from the PVC.

    I have purchased the "Green Bottle" ABS to PVC cement. Is it true that you only primer the PVC and NOT the ABS (hearing that it dissolves ABS)?

    Thanks.

  2. #2
    Consultant cwhyu2's Avatar
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    Aug 2007
    Location
    Cincinnati OH
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    1,330

    Default

    Fernco will have list of products,you cannot glue pvc to abs,pvc is solvent weld,abs is glued non compatable materials. fernco might have solve your problem.
    Clay
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  3. #3
    In the Trades Tom Sawyer's Avatar
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    Nov 2010
    Location
    Maine
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    2,943

    Default

    There are only two approved methods for joining PVC and ABS and glue ain't either of them. You either need a banded coupling (indoors) a non banded coupling (outdoors) or male and female adapters.

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