My house was built in 1971. All the toilets have these supposedly chrome supply pipes coming out from the wall and then a bendable probably aluminum pipe going up to the toilet. No problem unless you have to turn off one of the valves, like when replacing the toilet fill mechanism. When you turn the water back on they always leak. Sometimes tightening the nut might work but they are all as tight as you can get them now.
I think the valves came permanently attached to the chrome-like pipe. No threads are visible anywhere. I'd like to replace them all. The one in the pictures is the worst. I thought a compression fitting valve with a flexible line up to the toilet would be easiest. I could just cut the chrome pipe behind the old valve (there is plenty of room) and then install the new valve with a compression fitting - BUT - I pulled the cover flange away from the wall and, as I suspected, this chrome pipe is soldered onto a copper pipe. Way too close to the wall and in a tight space for any torch work if I wanted to get rid of the chrome pipe! So, my dilemma is: since this chrome pipe slid over the copper pipe, the chrome pipe is slightly larger and a standard compression fitting for a copper pipe would not work. Correct?
Do they make compression fit valves that would work with this slightly larger chrome pipe? I really don't want to do any torch work in this confined space.