Review on 💪 Appion MGAVCR Mega Flow Vacuum Rated Valve Core Removal Tool – 5/16" System Connection: Essential, High-Performance Tool for Efficient Valve Core Removal by Gavin Ghram

I used it to install my Pioneer 24k mini split system. I tried simply using a YellowJacket 5/16' to 1/4" adapter but could only pump to 1500 microns no matter how long I ran the pump (no lift in the isolation system). I picked it up and I used it along with the 1/4" version to isolate my micrometer gauge before releasing refrigerant into the system. I was able to get my system down to 100 microns in just a few minutes! As valve core removers they both work poorly. I couldn't remove the side Schrader valve on the 5/16" tool with the 1/4" tool when trying to use them together. It will drop the shredder before it hits the ball valve. I successfully removed the 5/16 inch shredder on my Pioneer but it was 45 degrees down. Really handy for evacuation when you have the service ports angled down or you can remove the valve cores by hand before evacuation.