What I have is a regulator like this one:
The regulators used on soft drink dispensers
are good enough for inflating tires and blowing
dirt out of things but don't have the flow for a
lot of other things. Most look like this one:
I use an ancient 2-stage oxygen regulator for CO2 (I changed it out with
a CO2 connector) but I only use it for low-volume stuff, like
carbonating beverages or occasionally inflating a tire.
I bought a medical oxygen regulator/flowmeter (cheap) to try with CO2,
but it will take a little more work to convert it because it has
nonstandard threads where the tank nipple screws into the regulator body.
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