Attached here is what I found in my new house, where the previous owner had his washer/dryer- this is an outside wall, in the basement, with a floating wood floor 1" above concrete slab.
Both valves were within the wall, as well as the standpipe, with vapour barrier cut up as seen in first picture. Decided to open up to inspect and correct- I will be installing a laundry sink next to this, with a washer draining in the sink.
In the second picture you will see what I found, and I have a question:
1- the front copper is hot, with the back cold; what is that Zurn part that is right before the cold water tap? Also, the pipe leading down into the ground is actually broken at the union (can’t be seen, but I can actually separate the pipe in two), and when I turned the tap on water came out the tap but not from the pipe leading down. I don’t understand what the purpose of that pipe going down is?