A connector assembly controllably couples a plurality of containers in a box. Each container has a fitment having a channel. The connector assembly includes a valve assembly and an actuator. The valve assembly is movable between an unengaged position and an engaged position. The valve assembly includes a plurality of fitment receptacles. Each fitment receptacle is associated with a respective fitment. A liquid flow channel of the valve assembly couples the fitment receptacles to the outlet. The actuator is movable between an unlocked position and a locked position. The valve assembly is configured to move from the unengaged position to the engaged movement in response to movement of the actuator from the unlocked to locked positions. The fitments are inserted into the respective fitment receptacles in response to movement of the valve assembly from the unengaged position to the engaged position.