Replacing sink shut off valves with little slack in the pipe

[Eddy100]

My current shut off valves have surface corrosion due to (what I believe) is from household cleaners stored under the sink. I'm not really sure how much of a risk they are in their current state or if it is even actual possible for shut off valves to rust through but would feel more comfortable replacing them. I've done some research and my understanding is I should use a hacksaw to cut off the (what I believe is) CPVC, and attach them using to new shutoff valves such as this.

https://www.homedepot.com/p/SharkBi...-Turn-Angle-Stop-Valve-23036-0000LF/202270612

The problem is one of my valves (on the right) is flush with the cabinet, so I have very little room to cut it, and I imagine if I do cut it there won't be any pipe for the shutoff valve to connect.

Any idea if I have to actually cut, or will it be possible to screw off my current valves?


Thanks

 

[Terry]

Seeing as those are on CPVC, I would suggest leaving them as long as they still work to shut off at the sink.
CPVC can get quite brittle with age. You have room for one replacement, but the other might need to go into the wall.