I wasn't referring to a twist screw for loading. I was talking about using a twist valve in place of the lever that releases the case. The idea would be to control the release in the manner of the tanks used in anesthesia for a constant flow. The key is consistent blood levels. N20 accumulates in the blood street.
Still, using a twist valve could get pretty dangerous, but then again those little tanks only hold a handful of cartridges.
One might consider welding a few of those little tanks together to create a larger tank.
What brand of cartriges do you use anyhow.
As a general rule I've found anything coming of asia are terrible and feel very dirty.