I wonder if someone could help me sort this issue out?
The water line to my refrigerator has no shutoff. I need to cap it, but it's setup so the threads of the waterline are connected to a nut on the copper piping - the water line is threaded into the nut on the copper line and tightened down. (see photo)
What can I buy to cap it off? I thought I could just buy a brass compression cap, but that's the wrong thing because there is nothing to screw it onto on the copper pipe. Also, I am not exactly sure what size I would need of whatever the solution is, so any guidance on that would be appreciated.