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Thread: 2 inch vs 1.5 trap for kitchen sink

  1. #1
    DIY Senior Member bbillcee's Avatar
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    Feb 2007
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    Default 2 inch vs 1.5 trap for kitchen sink

    i have a 2 inch pvc 90 stubbed out under the sink....i was planning to install a 2 inch trap then use a 2 in to 1,5 reducer to connect to the tail piece

    or would it be better to put an a 2 inch adapter at the 90 and use a 2 to 1.5 inch lock nut and step it down and use 1.5 for everything

    which would be the better job?

  2. #2
    Moderator & Master Plumber hj's Avatar
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    Default drain

    Neither way is necessarily "better" and both are equally adequate. Because of the long term benefits, I would use the reducer on the 2" and 1 1/2" tubing for the rest of the drain installation.

  3. #3
    DIY Senior Member bbillcee's Avatar
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    Default

    Quote Originally Posted by hj View Post
    Neither way is necessarily "better" and both are equally adequate. Because of the long term benefits, I would use the reducer on the 2" and 1 1/2" tubing for the rest of the drain installation.
    thanks HJ i just though maybe the 2 inch would having things flowing better...the 2 gal i replaced was down to about 3/4 with all the build up

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