MB Valve 203 Refill
This valve has an M5 thread and screws into a gas inlet plate (EC1.5MC) - they're easily replaced. We predominantly use this combination on our open blast systems, Apollo and Gemini. They are a one-way valve so when the user injects the solvent it stays held within the tube. This is advantageous as even when you change cans nothing will escape back out.
We advise not to put them in the freezer as they can block, and we also advise that they're not overused as they're not really designed for industrial level use. Flow rate is slightly reduced because the solvent is passing through a valve.