Patent ID: 8302822

Claim:
A pressure regulator comprising: a regulator body having a first threaded region for engaging cooperatively disposed threads on a CO 2 cartridge holder, and having a first opening coaxial with the first threaded region; the regulator body having a second opening intersecting the first opening and having an axis substantially perpendicular to the first opening, the second opening being disposed to deliver CO 2 at the regulated pressure to a beverage container when fastened to a beverage container; a regulator member within the second opening; an orifice member in the first opening and projecting between two sides of the regulator member to define an orifice facing the delivery side of the second opening; the regulator member having a first end region having an orifice closure member therein adjacent the orifice, and a second end region, the first and second end regions being integrally coupled by the two sides of the regulator member; the second end region defining an outer surface between first and second flange regions; a flexible diaphragm having an inner surface stretched over, restrained from movement and sealing with respect to the outer surface of the second end region of the regulator member between the first and second flanges, and having a outward extending flexible region; a retainer snapped into an end of the second opening to lock and seal an outer edge region of the outward extending flexible region to the regulator body; and, a spring disposed between the retainer and the second end region of the regulator member to push the second end region toward the orifice member.