Washing machine standpipe-- wye for drip drain line?

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crunky

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Greetings

Cant find any code on this.

Can you put a wye on a 2" washing machine standpipe [as shown in photo] for a drip drain line-- on the branch?

it is a very tight a fit with the wm hose otherwise

if ok, where does the standpipe height get measured from, the trap or the wye?

Thanks!

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Reach4

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If you were to have the drip hose mounted 1 inch above the branch in your photo, I think you would be within code. That provide an "air gap". You could do that by extending the leg with a piece of PVC with a chunk out of the side, and a couple of holes for a nylon tie that would hold your tube. They want the water to go onto the floor if the drain overflows rather than being sucked into your softener. Getting sucked into the softener would not happen anyway, but that "air gap" is the rule.

Note that for the 30 inch dimension below, many codes allow higher numbers.

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hj

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Some washer boxes have the Y preinstalled under TWO openings in the box. If you do your own, if the drip riser is high enough above the WM riser, it will create its own "air gap" because the water can never rise higher than the top of the wm standpipe.
 

Jsal13

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No ac condensation please. Lint and condensate will build up and it will need to be jetted to fix stoppage. It gets rock hard!
 
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