water drain in laundry room

last month

I bought a house where the laundry room was never used. The hot and cold water faucets for the washing machine are a 4allbox with flawtite valves and arrester.

In between the 2 valves where the water drain hole is supposed to be is still the plastic shell.

That makes me think the water drain pipe is not connected there. I see this sealed 2" pvc pipe in the wall a foot to the right of the 4allbox. Am I supposed to unseal this to hook up the water output of the washing machine?

Featured Answer

wdccruise

last month

After removing the cap, look inside the wall for a standpipe. If it's close to the inside surface of the drywall, I don't see why you couldn't push the washer's drain hose into the standpipe just as you would if the standpipe were vertical.

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Comments (6)

kaseki
last month
I would recommend opening the pipe end and test for flow with clean water. Get a flexible funnel (from an auto parts store or wherever) and pour some water in to see if it flows away and doesn't back up. Or use a hose such as a spare washer intake hose connected to the washer feed. Note that if there is a trap in the wall it is likely dry and sewer gas may be present so some ventilation is desirable.
Maurice Gehin thanked kaseki
dan1888
last month
It's pretty likely the rough plumbing inspection wouldn't have passed if it wasn't hooked up. Your building department will have the info on that if you call or stop in.
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Maurice Gehin
Original Author
last month
thanks everyone. Once i unscrewed the cap, i was able to see that it is indeed the water drain line. It comes from the attic (maybe for the AC condensation, or the pan under the water heater, i haven't checked). The pipe is dry right now (no AC running since it's winter).
kaseki
last month
It could be vented to the roof.
wdccruise
last month
If you hang the washer's drain pipe there, you might want to use some kind of strap to hold it in place.