Cool to see vintage stuff like this still working. Only rarely came across R12 equipment at work, and most were on the way out by the time I got to them. In a lot of cases I'd preemptively swap valve cores of the pressure taps as part of servicing since old ones caused nuisance leaks so often. Sometimes badly enough to where I could hear the gas hissing out when I unscrewed the caps!
Cool to see vintage stuff like this still working. Only rarely came across R12 equipment at work, and most were on the way out by the time I got to them. In a lot of cases I'd preemptively swap valve cores of the pressure taps as part of servicing since old ones caused nuisance leaks so often. Sometimes badly enough to where I could hear the gas hissing out when I unscrewed the caps!