Upward drain

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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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Jadnashua

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Yes...it will create problems. My unprofessional opinion. How far does it go horizontal prior to hitting the vertical?
 

p1lumb3r

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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..
 

Gary Swart

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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.
 

hj

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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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