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View Full Version : Can the garbage disposal outlet be lower (about 1 inch) than the P trap


osiris2126
Jan 29, 2011, 02:02 PM

hkstroud
Jan 29, 2011, 02:45 PM
No, but if you turn the trap around backwards you can probably make it work.

ma0641
Jan 29, 2011, 07:00 PM
It will pump some water out but since water seeks its own level, water will drain back into the disposal. One possible solution is to open the wall and see if you can lower the drain line a couple of inches.