So, I’m working on replacing/repairing my basement floors and one of the pipes under the sink didn’t have a shut off valve. I looked into it a bit and decided I wanted to add one since it didn’t look to difficult and that would let me turn the house water back on much earlier in the project.
I couldn’t get the threaded 90 degree piece to unscrew no matter how much force I used so I cut it off intending to use a shark bite compression replacement shut off valve. I’m not sure why I didn’t realize it, but it’s not a copper pipe it was a threaded iron (steel?) Pipe and it doesn’t look like they make compression fittings for those.
Any help you can offer would be amazing. Our house water is shut off and my wife is understanding to a point, but I need to get this fixed asap.imgur Link