Upward drain

p1lumb3r

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Diagonal upward drain

Kitchen drain pipes run horizontal to the main drain. Will there be a problem with drainainge if there is a diagonal upward slope (3"-4" slope) to main drain? thanks in advance
 
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Yes...it will create problems. My unprofessional opinion. How far does it go horizontal prior to hitting the vertical?
 
Yes...it will create problems. My unprofessional opinion. How far does it go horizontal prior to hitting the vertical?

jadnashu..
thanks for the reply...from the p-trap, horizontal pipe is about 3-4 ft. before the pipe goes diagonally up (not vertical) maybe about 3-4 inches to connect to the main drain pipe...thanks..
 
Water will not run up hill. A drain must slope downward at the rate of at least 1/4" per foot or 1" per 4 feet. No way around it.
 
drain

If you can convince water tp flow uphill, your next project should be to design a perpetual motion machine, because it is supposed to be impossible also. To quote someone, "Don't lower the drain, raise the sink", or vice versa.
 
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