Pressurized brewing, gas infusion and dispensing machine

A cap for a pressurized beverage container, the cap comprising:

• a cap body;
• a pressure regulator removably coupled to the cap body, the pressure regulator configured to be removed from the cap body by twisting the pressure regulator in a first rotative direction relative to the cap body;
• a locking component coupled to the pressure regulator;
• a lock actuator coupled to the cap body and configured to mechanically engage the locking component and prevent rotation of the pressure regulator in the first rotative direction when the cap is installed on a beverage container and to disengage from the locking component and allow rotation of the pressure regulator in the first rotative direction when the cap is not installed on the beverage container.

A cap for a pressurized beverage dispenser comprising:

• a cap body;
• an external straw extending from the cap body, the external straw having an internal passageway for delivering a beverage to an outlet end of the external straw;
• a discharge chamber within the cap body being in fluid communication with the internal passageway of the external straw;
• a metering valve configured to allow a flow of beverage from the beverage container to the discharge chamber when the metering valve is open and to substantially preclude the flow of beverage into the discharge chamber when the metering valve is closed;
• a diaphragm configured to open the metering valve when the diaphragm is activated and to close the metering valve when the diaphragm is deactivated, the diaphragm further configured to activate when a user sucks on the outlet end of the external straw to create suction within the discharge chamber, the discharge chamber being bounded in part by the diaphragm;
• and
• an actuator on the cap body and coupled to the diaphragm, the actuator configured to activate the diaphragm when the user manually engages the actuator.