A kit for dispensing a beverage through a dispense tube comprising a dispense valve, the kit comprising: •—an assembly of a keg (1) and a closure (2), the keg (1) and closure (2) assembly comprising: •a. an inner vent mechanism incorporated in the closure or at the interface of keg and closure, the inner vent mechanism configured to fluidly connect the inner space and intermediate space when an overpressure of predetermined value Poo occurs in the flexible bag; and •b. a safety relief mechanism (8a, 8b, 27) incorporated in the closure (2) or at an interface of closure (2) and keg (1), the safety relief mechanism designed to relief pressure when an overpressure h of predetermined value P01 occurs in the keg, wherein Po1 is larger than Poo; •—a keg connector (38) comprising a base body and: •a) coupling means (40) for connecting the keg connector (31) to the neck portion (5) of the keg (1) or to the closure (2) of said keg; •b) a dispense connector (38a) comprising a dispense tip (38b); •c) a gas connector (39a), comprising a gas tip (39b); characterized in that said connector comprises an overpressure relief vent (41) and an overpressure relief valve (42) to relief pressure when an overpressure in the gas tip (39b) reaches a predetermined overpressure value P02 and in that at least one of following conditions are fulfilled: •i The predetermined overpressure P02 at which the relief valve opens is smaller than Po1; •ii the coupling of the keg connector to the keg or closure increases the overpressure Po1 needed to activate the overpressure mechanism in the closure or at the interface of keg and closure to an overpressure Po1′ larger than Po1, with Po1′ being larger than P02.