Review on 🐝 Enhance Efficiency with the Yellow Jacket 93842 Mini Valve: A Game Changer for Precision Control by Larry Morris

Just updating my review after using it during the air conditioning season and then leaving it on all winter for the heating season. Found all 3 valves to leak at the slightest pressure after sitting all winter. I poured in some oil, it seemed to help a little. Hopefully it's just because they haven't been used in a while and the seals just need to swell a bit. I also hope to still be able to use them to get the vacuum out. It seems that for the price they should be of the best quality and a well known brand.