Garbage disposal & drain pipe heights

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trapweirs

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As seen many times before, I'm running into an issue with drain heights and my garbage disposal outlet. Attached is a picture with a laser level. Based on that, it appears that the drain into the wall is just barely below the disposal. Think that would be enough to get water out of the trap and into the wall and not sit in the disposal?

Conveniently, the drain in the wall makes a 90 degree turn to the left runs about 3 feet and into the y connection - all of which is behind cabinets with a freshly laid countertop on top. Moreover, the pipe goes through studs, so I'd imagine it would be a massive pain in the kiester to try and move that pipe lower.

Alternatively, does anyone have any experience with a grey water pump? Would it get clogged up post-disposal?
 

trapweirs

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Probably should post the picture, shouldn't I?
1000034449.jpg
 

Storm rider

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It looks like you only need to save about an inch, so get a disposer with a higher outlet. If you would like to make a bigger job of it, get a shallower sink.
 

Reach4

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Conveniently, the drain in the wall makes a 90 degree turn to the left runs about 3 feet and into the y connection - all of which is behind cabinets with a freshly laid countertop on top. Moreover, the pipe goes through studs, so I'd imagine it would be a massive pain in the kiester to try and move that pipe lower.
The drop is what, 3/4 inch? If you can keep 1/4 inch drop per foot, I expect that is OK.
Is there an additional sink bowl, or some other drainage maker, to the left of the photo? If not, I think you should be OK with a straight discharge tube into a trap.

Alternatively, does anyone have any experience with a grey water pump? Would it get clogged up post-disposal?
I think you are considering using that pump as a booster for the drainage, and I don't think it would be OK, but I also think there is probably not a need. I am not a plumber.

I am thinking something like this but with a reversible trap reversed so the input to the trap is lower:
index.php

This image is edited to illustrate the reversed reversible trap.
img_2.jpg
 
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Jeff H Young

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sorry didnt notice the comment about the trap arm coming from 3 ft away . it would be harder to rework. if there is no dish washer a very common way is to have the pipe run through cabinet. reach 4 way should work ive done it but generally avoid
 

John Gayewski

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Looks like there is enough room to me. If not then get rid of the disposal. They aren't necessary for anything other than clogging your drain in the future.
 

Jeff H Young

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Ive had disposals for 50 plus years with seldom issues . I find them convieiniant but I use pretty lightly I dont dump all leftover food down them.
 
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