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    AaronT's Avatar
    AaronT Posts: 2, Reputation: 1
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    #1

    Dec 25, 2009, 09:52 PM
    Is a PVC coupling for DWV the same as a PVC coupling for water?
    Is a PVC Drain Waste and Vent (DWV) coupling the same as a coupling for PVC water pipe?
    KISS's Avatar
    KISS Posts: 12,510, Reputation: 839
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    #2

    Dec 25, 2009, 10:50 PM

    NOPE! See the dimensions linked on this page. Dimensions
    speedball1's Avatar
    speedball1 Posts: 29,301, Reputation: 1939
    Eternal Plumber
    		  
    #3

    Dec 26, 2009, 06:20 AM
    Quote Originally Posted by AaronT View Post
    Is a PVC Drain Waste and Vent (DWV) coupling the same as a coupling for PVC water pipe?
    No! While All PVC couplings , (see image) Work pretty much the same way. Pressure couplings are built to contain pressure while DWV coupling are not. Doe this answer your question? Tom
    AaronT's Avatar
    AaronT Posts: 2, Reputation: 1
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    #4

    Dec 27, 2009, 07:13 AM
    Yes, well most of it; I did not know if the couplings had a different depth of glue surface, along with the pressure rating, or if it was marked somehow on the fitting it self. I know that a coupling I've been using for DWV has a 1-1/2" glue surface for 4" PVC. I am in a place that is somewhat hard to get pipe I'm use to using for water which would be a belled end with a compression type seal, but I only have Sch 40 PVC pipe and will need a coupling. Any help on this is appreciative.
    speedball1's Avatar
    speedball1 Posts: 29,301, Reputation: 1939
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    #5

    Dec 27, 2009, 09:37 AM
    Quote Originally Posted by ;
    . I am in a place that is somewhat hard to get pipe I'm use to using for water which would be a belled end with a compression type seal, but I only have Sch 40 PVC pipe and will need a coupling. Any help on this is appreciative.
    Drainage couplings are shorter with less glue surface. Pressure couplings have more glue surface to contain the pressure.
    If I were in a tight spot and had to couple two pipes together I'd use a dresser coupling, (see image) Good luck, Tom
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