Never thought about it, but imagine if you thread a tire valve into the top of the can, that would replicate the discharge of the inflator bottle. So modify the valve stem so that you can attach it to your compressor and 'voila'.... should fill. Then I guess you'd unthread the tire valve quickly from the bottle. Most air should remain inside. Not sure but would guess 100 psi would be pretty good. That arrangement would depress both schrader valves to the open position, as you unscrew they close.
let us know...
