In plumbing for a washing machine drain, is there a limit on how high the outlet of the p-trap can be relative to the outlet of the drain that's built into the base of the washing machine?
I'm only familiar with situations where the p-trap for the drain is in a crawlspace and far below the outlet on the washer. Now I need to plumb a washer that sits on a concrete slab so it drains through an exterior wall.