Just called my local hardware store as I need to pick up a shut off valve to go in half inch copper line. I believe what I want is referred to as a gate valve (inside totally retracts to give full unrestricted flow) correct? I asked if they had these so I could use the shark bite fittings. They said they had Pex and it was the same. Since I've read about both but never used either are these the same or interchangeable? Is there a special tool I'll need to have on hand to remove should I want to? Last question: Do you feel the shark bite or Pex are as reliable as compression fittings?
thanks Al
