Pressurized gas containing system

An integrated combination valve and gas flow regulator for delivering compressed gas from a supply container comprising:

• (a) a valve having an inlet, an outlet and a cylindrical member defining a chamber extending away from said outlet along an axis;
• (b) a gas flow regulator positioned to receive gas from said valve, said regulator having a body, a cylindrical sidewall extending from said body and engaged to said valve cylindrical member, said sidewall defining a compartment, a piston axially movable in said compartment from an open position to a closed position, said piston having (i) an enlarged head slidingly and sealingly engaged to cylindrical sidewall and (ii) a reduced size section extending axially from said enlarged head and slidingly engaged to said valve cylindrical member, the reduced size section having an end, a passageway extending axially through said enlarged head and said reduced size section, a valve seat mounted on the end of said reduced size section and movable with said piston from an open position spaced from said valve outlet to a closed position engageable with said valve outlet, a compression spring yieldingly urging said piston to a position at which said valve seat is spaced from said valve outlet and open, to a closed position engaged to said valve outlet, a regulator outlet in said body for receiving gas from said piston passageway and a needle valve positioned in said regulator outlet, said needle valve being adjustable to vary the size of opening of said regulator outlet and thereby vary the pressure.