Embodiments of the invention include systems and methods for priming or purging a product dispenser. In one embodiment, a product dispenser can include a plurality of beverage ingredient sources comprising a respective beverage ingredient; a plurality of beverage supply lines in respective communication with the plurality of ingredient sources; at least one pump in communication with the plurality of beverage supply lines; and a controller in communication with the at least one pump and operable to execute a set of instructions operable to: receive a command to prime or purge the product dispenser; and activate the at least one pump, wherein a predefined amount of the respective beverage ingredients is simultaneously introduced into each of the plurality of beverage supply lines.