Patent ID: 7051749

Claim:
A gas cabinet including an enclosure containing at least one gas supply vessel and flow circuitry coupled to the gas supply vessel(s), and including multiple sticks each of which is arranged for gas flow communication to a respective gas-utilizing process unit, with a vacuum source and a purge gas source being coupled to the flow circuitry and arranged for evacuation and purging of one or more of the multiple sticks, wherein the flow circuitry is valved to enable portions of the flow circuitry associated with respective ones of the multiple sticks to be isolated from other portions of the flow circuitry, so that process gas can be flowed to one or more of the sticks, while other sticks are being evacuated and purged, or otherwise are closed to flow of dispensed gas therethrough, wherein the gas cabinet is characterized by at least one of the following characteristics (1) and (2): (1) none of the multiple sticks containing a pressure regulator therein; and (2) the gas cabinet including a purifier arranged for flow therethrough of gas from the purge gas source.