Hello, I have an existing utility tub and previously drained my washing machine direct into the utility tub. I would like to add in a washing machine standpipe in addition to the utility tub, but I am unsure about how to design. I thought about either of the designs within the attached (A and B), but I am concerned these designs will lead to sucking the trap dry. I believe tapping into the trap and running a separate line is probably the "best" design, but is there a design solution where I can maintain a single arm and avoid having to bust out the wall?
Adding Standpipe to Existing Utility Tub line
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This is what i ended up going with...no floods yet! *knock on wood* Note: i just shoved a pipe in there for a better picture, but the one sticking straiggt out elbows up 90 degress and the tailpipe connects to utility sink drain in final version.
Mitchell-DIY-Guy
Well-Known Member
I'm sure others will weigh in here, but I think that the air vent needs to be higher...?? Higher than the sink? We can't see the height of the sink here...
If it works, great. Personally I would have made the standpipe out of 1.5" PVC, not the 1.25" stuff. Sometimes that water can come out of a washing machine at high velocity and volume, and just hope that the 1.25" is sufficient...
If it works, great. Personally I would have made the standpipe out of 1.5" PVC, not the 1.25" stuff. Sometimes that water can come out of a washing machine at high velocity and volume, and just hope that the 1.25" is sufficient...
Why ask the proper way if you were going to do it the wrong way.
That is all wrong. You connect that to a modern washing machine and something is going to be flooded. Make sure that aav is in there good as it will need to hold water back
Stout Mechanical
Well-Known Member
Everything NOT to do in one picture
And that 1-1/2" tubular stuff is going to blow apart.
