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Abstract

A gas dispensing assembly suitable for use in combination with an interchangeable high pressure gas supply vessel. The gas dispensing assembly includes a regulator means comprising a housing having a passageway therethrough, and a check valve-gas flow regulator positioned in the passageway of housing. The check valve is operable so as to block any gas flow above a predetermined pressure through the passageway of the housing. The gas flow regulator controlling the rate and/or the pressure of the gas exiting from the regulator means. There is an outlet demand valve means comprising a housing having a passageway therethrough, the housing being detachably connectable to the interchangeable high pressure gas supply vessel, and to the other end of the housing of the regulator means, a chamber being formed between such housing and the regulator housing, the height of the chamber being variable by adjusting the distance between the housings, and an outlet demand valve positioned in the passageway of the housing. Actuator means for opening the outlet demand valve is positioned beyond the first end housing so as to extend into the chamber. An actuator plate means is located in a movable manner in the chamber which has at least one passageway therethrough which is not blocked by the actuator means of outlet demand valve. Outlet demand valve is opened to high pressure gas flow by means of reducing the height of the chamber so that actuator plate means forces inward the end of the extended actuator means.

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First Claim