Plumbing horizontal runs inside an internal wall

[Spudsly]

This space is actually between an already finished room and a space that is getting finished at the moment.

 

[Chris.Reef]

Question for all of you more knowledgeable than me. I just realized that the 1.5" couplings I used are dwv. I realize that the d is for drain and these are indeed drains but I'm not sure this is the same thing. Should I worry about this?

Second bit of excitement, I came home to find the wall with the pipes buried in insulation. I think this wall was supposed to have no more insulation but I think I can still reach everything.

No need to worry about the drain fittings since it wont be pressurized.

 

[Spudsly]

No need to worry about the drain fittings since it wont be pressurized.

Ok great. I was worried in a full syphon there might be some pressure but I suppose it's not enough to be an issue.