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    snbrownie's Avatar
    snbrownie Posts: 1, Reputation: 1
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    #1

    Aug 7, 2009, 02:16 PM
    Picture diagram of double sink plumbing with garbage disposal
    I would like a picture diagram of an efficient twin sink basin and garbage disposal. My garbage disposal seems to backup with an average load. I have two traps joined to wall drain.
    mygirlsdad77's Avatar
    mygirlsdad77 Posts: 5,713, Reputation: 339
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    #2

    Aug 7, 2009, 03:56 PM
    This pic I gave is the best way to hook up a double compartment kitchen sink with garbage disposal. But the two trap system will work just fine too. I think you may want to take apart disposal trap and inspect it , as well as the disposal itself. Please let me know what you find.
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    afaroo's Avatar
    afaroo Posts: 4,006, Reputation: 251
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    #3

    Aug 7, 2009, 05:48 PM

    Mygirlsdad,

    Gave a good picture, I will add the Images below too, one is with two traps and one is with one trap, both works, if your garbage disposal backup do as Mygirlsdad says, good luck.

    John
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    Milo Dolezal's Avatar
    Milo Dolezal Posts: 7,192, Reputation: 523
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    #4

    Aug 7, 2009, 07:00 PM

    Can you post photo of your drains ? We would like to see your present hook up... Thanks.. Milo
    speedball1's Avatar
    speedball1 Posts: 29,301, Reputation: 1939
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    #5

    Aug 8, 2009, 08:36 AM
    In our new construction we use a wye coming off the stunout and one trap for the disposal and the other for the sink. This seems to be the set-up that you have.
    My garbage disposal seems to backup with an average load.
    Tell me more! Where does it back up out of? The other sink or the disposal itself?
    As Milo asked, "Can you post a picture?" Regards, Tom
    afaroo's Avatar
    afaroo Posts: 4,006, Reputation: 251
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    #6

    May 4, 2012, 02:21 PM
    None
    rrenter1's Avatar
    rrenter1 Posts: 1, Reputation: 1
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    #7

    Aug 22, 2012, 08:24 AM
    I have a double sink with disposal and extra line coming in from my outside sink made of clear plastic tubing? Can you show me a diagram for plumbing this?
    speedball1's Avatar
    speedball1 Posts: 29,301, Reputation: 1939
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    #8

    Aug 22, 2012, 09:58 AM
    Hi menter and welcome to The Plumbing Page at AskMeHelpDesk.com
    Don't need a diagram for this one, The hookup should go like this.
    Replace the tailpiece coming out of the drain with a branch tailpiece, (see image) and connect the outside sink to that.
    NOTE, If the outside sinks trapped remove it. The outside sink will be trapped by the one under the branch tailpiece and it's against code to double trap a fixture, Good luck, Tom
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    pat51's Avatar
    pat51 Posts: 1, Reputation: 1
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    #9

    Jun 12, 2013, 09:33 AM
    Mine backs up out of the other sink.
    Milo Dolezal's Avatar
    Milo Dolezal Posts: 7,192, Reputation: 523
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    #10

    Jun 12, 2013, 09:36 AM
    Pat, if sink backs up to the other sink, it means your common drain is clogged. It can be directly under the sink or it can be further down the line, inside the wall our under the floor. You will have to remove trap, clean it and snake your drain. You can use 1/4" or 3/8" snake to do so. You can rent one from Home Depot - or call drain cleaning contractor to do it for you. It is a routine service call and should not be expensive. Hope that helps. Back to you. Milo
    frankiedon53's Avatar
    frankiedon53 Posts: 39, Reputation: 1
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    #11

    Jun 14, 2013, 09:16 AM
    It is better to have the garbage disposer draining separate like it is with the two traps,because the flow gets to the bigger drain pipe sooner than if it went by way of the sink drain which is only one and a half inch As milo says snake the drain for a blockage further beyond the traps.
    speedball1's Avatar
    speedball1 Posts: 29,301, Reputation: 1939
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    #12

    Jun 14, 2013, 09:47 AM
    Hi Pat and welcome to The Plumbing Page at AMHD.com. You're responding to a 4 year old dead threads so I gave you one of your own. Please check the date before you post. Thanks
    Good advice by Milo. Send your stake up into the wall and it only has to go 6 foot. Good luck Tom
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