I have a question about the discharge piping for a wash machine. I purchased a house that I will be using as a rental property. The house was a foreclosure that sat empty for 7 years. I happened to bump into the last tenant while I was there working and he told me that the landlord didn't let him have a washer or dryer for all the years he was living there. In fact, the area in the photo was actually walled off.

I plan on giving my wash machine to the new tenants. I know that when the water is discharging out of the machine into our slop sink at my home, it really comes out at a high volume. My concern is that the water won't be able to drain down that pipe quickly enough and that it will come pouring out the top. Is my concern valid or am I overly nervous? I've poured water down the pipe and it drains fine. Would a taller pipe be better? There's no room for me to put a slop sink there.

Any advice?

 

Two inch is standard and that looks two inches so it should be okay but I would first test it with a garden hose to make sure it isn't stopped up.

 

The machine is draining very close to the trap. That pipe should be at least as high as the machine is tall and maybe even a foot longer.

 

Code is 18" to 42" above the trap weir. But codes can vary depending on location. And we have no way of knowing if the plumbing in the wall or the venting is correct.

 

Thanks for the replies everyone. The pipe that's there now is probably about 16-18" from opening to the trap. I can probably add another 20" length of pipe. Are there any other options or fixes I may not know of?

 

Before extending too far.... make sure the drain hose will reach.

 

I would extend the pipe another 12-16". The extra volume will help.
I would also run the washer at least on two cycles to be sure it drains properly (no clogs, etc)

The only other solution would be to cut the wall and move the standpipe down... but that is going to be a whole lot of work for maybe something that will never give you an issue.

 

I measured the length of pipe that goes into the trap and it's about 15". Based on the ceiling height, I can probably add an additional 15" piece of pipe. I'll use a one of those rubber pipe couplers with the hose clamp on each end to join them. That will give me a 30" height which I'll hope and pray is enough.

Thank you again everyone for the advice!