Patent ID: 7013916

Claim:
An apparatus for containing and delivering hazardous gases at sub-atmospheric pressure from a pressurized container, comprising: (a) a valve body in sealed communication with an outlet orifice of the pressurized container, said outlet orifice of said pressurized container open to an interior chamber of said pressurized container; (b) a fluid discharge path in the valve body, between the outlet orifice of the pressurized container and an outlet orifice of the valve body; (c) a pressure regulator having a pressure sensing means capable of responding to sub-atmospheric pressure, integral to said valve body, in-line in the fluid discharge path, said pressure regulator pre-set to a pressure below atmospheric pressure to allow said gas to be delivered through said regulator from said interior chamber only when said pressure sensing means senses a downstream pressure at or below said pre-set pressure; and (d) a high pressure shut-off valve integral to said valve body, in-line in the fluid discharge path and upstream from said pressure regulator; whereby said gas may flow through from said interior chamber of said pressurized container through said fluid discharge path, through said outlet orifice of said pressurized container, and through said outlet orifice of said valve body only when said outlet orifice is connected to a vacuum system.