How close should check-valve be to the washing-machine from a line 15' feet away from washing-machine?

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Originally Posted by byemy

how close should check-valve be to the washing-machine from a line 15' feet away from washing-machine?

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The check valve should be directly next to the tub and if possible give the hose a little slope towards the drain so the liquid left in the hose doesn't turn sour. Good luck, Tom