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Correct Under Sink Plumbing?

Discussion in 'Garage / Workshop' started by kris77, Apr 13, 2012.

  1. kris77

    kris77 [OP] Born in the Backwoods

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    Short story, My garbage disposal is going bad, so im going to replace it. I'm having the problem now everytime i turn on the disposal, crap comes up in the other bowl of the sink.

    Whats the correct way to plumb a disposal under a sink.

    Mine looks like this now...
    [​IMG]

    Just add a disposal on the left side. I'll try and get a pic tonight.
     
  2. Pugga

    Pugga Pasti-Dip Free Since 1983

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    Not sure if this is the correct way but if I were to add a disposal, I'd make the trap straight under the disposal and the other sink bowl T in below the disposal. Otherwise, The T you have in the center should have something in the middle to direct the water down to the trap so water can't easily pass through the T and come up the other bowl.
     
  3. HomerTaco

    HomerTaco That "grill guy" Vendor

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  4. SnowroxKT

    SnowroxKT AK SnowroxKT

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    This

    EDIT I forgot how a disposal works :eek: they go out the side, not the bottom, so this no workie.
     
  5. JonnyBb

    JonnyBb I have to return some videotapes

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    [​IMG]
    This is what mine looks like, but drain down instead of back
     
  6. 4x4jeep

    4x4jeep Well-Known Member

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    Mines like this too
     
  7. Pugga

    Pugga Pasti-Dip Free Since 1983

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    Shit, forgot they come out the side :eek:
     
  8. JonnyBb

    JonnyBb I have to return some videotapes

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    Hey OP, I was mistaken. The first pic I posted was similar to what I had in my first house. My current house is set up with a trap off the garbage disposal which goes to a T before the drain. The sink side then has a trap that connects to the other side of the T. It doesn't back up quite as bad.

    photo(3).jpg
     
  9. Rupp1

    Rupp1 Well-Known Member

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    Here it is:

    [​IMG]
     
  10. kris77

    kris77 [OP] Born in the Backwoods

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    This makes sense having a 90 attached to the disposal then going over to the straight pipe going down to the trap. Wonder if that "T" is a straight "T" or a directional "T"?
     
  11. El Tano

    El Tano i am the one who knocks

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    Dude, if this is your sink, you need to get the drain hose from the dishwasher higher otherwise the dirty water, food, etc from he disposal can go in the hose.
     
  12. surfsupl

    surfsupl Well-Known Member

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    Thats a 1st. I have never seen a 4'' line brought up under a sink like that b4?
     
  13. Gearheadesw

    Gearheadesw Well-Known Member

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    What you are looking for is a continious waste. This will connect the disposal to the p-trap for the waste to go down
     
  14. Deercantseeme

    Deercantseeme Well-Known Member

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    If it is backing up its most likely due to your drain being plugged. As a plumber that would be the first thing I'd check. You'll most likely find that to be the problem.
     
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