Possibly, but it's convulted, heavy and leakprone.

Also, you don't have much options for bottles.

For heavies, the standard fire extinguiser from 1.1kg to XX kg with screw or push valve with DIN norm thread.

Feathers have 2 options. Most older and UK based feathers use an adapted 20 oz bottle with a heavyweight screw valve.

On the other hand, we see a movement to paintball valves, preferably with on/off valve, and not pinvalve.
These are standard for the bottlesize (from 3.5 to 24 oz) lighter, compacter and fo the job equaly well.

So, what bottle goes in the robot, and what one do you want to use to refill the robotbottle?