Product review (5 stars): Simple to install
I was hesitant since the valves I've replaced in the past all had compression nut fittings but this was absurdly simple to install.  Just press down on the ring around tube and then pull straight out to remove from the old one.  Then just firmly insert the tube into the new valve and it catches and locks instantly.  Took me less than 10 minutes to replace, including pulling the refrigerator out!