Originally Posted by oh'mike
It looks to me that you have a decorative plated copper stub out. Check the diameter---
If I'm right--you can cut off the old shut offs and install new compression ones.
Out side of copper is 5/8"--got a scrap of 1/2' copper to compare it to?
The outside diameter of that pipe is 5/8 in. Does that mean it's copper as you said? Unfortunately, I don't have a "scrap of 1/2' copper". Why would I need to compare a 1/2 scrap with a potential 5/8?
What would be the ultimate test to make sure it's really platted copper? Trying to cut it? What would be the difference?