Okay!

I have spent all day looking and ringing places and I have not found anything useful.
I have even lowered my expectations, and looked for a screw type valve of any size, with a bust disk, thinking I can manufacture a adapter for the bottle and the valve, and have had no luck.

I know this is a pretty common problem, as the fire extinguishers are widely used, and am interested how others have solved it. I have been referencing this page quite a bit in my build.
http://howto.killerhurtz.co.uk/pneumatics.htm
The rules state a manual isolation valve, would the handle valve count as an isolation valve, and part of the robot priming process be pushing the handle and fastening a strap to keep it 'live'?


Or I am thinking I could leave the handle valve as it is, and find a hydraulic ball valve (or similar, possibly paintball?) to fit on the output side of the handle valve, and just 'clamp down' the standard co2 handle all the time.

The team hurts team seem to have mounted directly to a regulator then had the dump valve on the low pressure side. I cannot see how they isolate the bottle.

Any help would be greatly appreciated!