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    DWV pipe coupling from 1-1/2" ABS to 1-1/2" ABS?

    I have a tight spot in the attic crawl where a new waste vent for a new sink will go. It would be easier to use 2 neoprene transition couplings for 1-1/2 inch ABS to 1-1/2 inch ABS, if there is such a thing, instead of using ABS adhesive in this position. Is there a Proflex/Fernco/PlumbQuick or...