Jojn, most of the gasses require a different Hoke torch. They
all look the same, but an orifice? inside the body is different.
(I believe that one or two gasses require the same torch…)
Vigor may be one of the distributors and Pro Craft may be a
distributor as well, or perhaps even the maufacturere. They are
often marketed under Hoke Jewel.
I’ve used an oxyprpapne Hoke for years and wouldn’t switch.
many of my students love 'em too but there are some who really
dislike the weight and the control knobs. I think that you could
probably enjoy soldering w/ a flaming piece of celery if that’s
what you grew up on. To each his own.
Good luck, Andy Cooperman