Gas delivery system and capsule for use therewith

摘要

A gas delivery system includes a capsule 4 for storing a propellant fluid, eg. helium under pressure. The capsule 4 is provided with a stopper 5 having a stem 16 formed with a frangible section 18. In use, mechanical means 9 is employed to rupture the stem 16 about the frangible section 18 to release the helium under high pressure between 60 and 80 bar.