Non-metal growler cap for beverage carbonation preservation or beverage re-carbonation in the nature of a plastic bottle cap which has two openings containing built-in metal pressure relief and pneumatic valves, for use with a detachable injector and container filled with carbon dioxide

'beverag':7,11 'bottl':21 'built':29 'built-in':28 'cap':5,22 'carbon':8,14,47 'contain':27,44 'detach':41 'dioxid':48 'fill':45 'growler':4 'injector':42 'metal':3,31 'natur':17 'non':2 'non-met':1 'open':26 'plastic':20 'pneumat':35 'preserv':9 'pressur':32 're':13 're-carbon':12 'relief':33 'two':25 'use':38 'valv':36

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