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Thread: Resaurant Sink Drains, did I screw up? ABS vs Copper

  1. #1
    In the Trades SacCity's Avatar
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    Default Resaurant Sink Drains, did I screw up? ABS vs Copper

    I went to a restaurant last week and had to rebuild the drain on their bar sink which drains into a floor drain.
    It was 1-1/2" copper with tight 90's and no clean outs. The bartenders keep dropping straws down the drain and clogging them. And there is no easy way to repair.

    I rebuilt the drain long sweeps, clean outs etc.... All good but I used ABS pipes.
    Now that I've walked home and am thinking about it I wonder, about half of the restaurants seem to have copper, and the other half ABS.

    Just because they use ABS does not mean that it's valid.....

    Location: Sacramento, CA

    Thanks Mike
    Last edited by Terry; 04-06-2011 at 09:16 PM.

  2. #2
    Forum Admin, Expert Plumber Terry's Avatar
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    I prefer plastic and ABS for restaurants, at least for in the bar. Copper perforates after a while in those locations.

  3. #3
    Certified Plumber Plumber1979's Avatar
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    should be PVC DWV SYS 15

  4. #4
    Moderator & Master Plumber hj's Avatar
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    quote;
    should be PVC DWV SYS 15

    SHOULD BE? Why? I have not used a single piece of PVC DWV pipe or fittings in the 40 years I have been in this area, but HAVE installed many commercial and bar sinks using ABS.

    Correction. I did use PVC for a laboratory sink drain because they were using chemicals that melted ABS but not PVC.
    Licensed residential and commercial plumber

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