BACK-FLOW PREVENTING BAG VALVE FOR BAG-IN-BOX CONTAINER

摘要

A bag valve coupling member (22) for a soft drink syrup bag-in-box container having a back-flow preventing one-way valve (30) therein preferably in addition to the standard self-sealing popper valve (40) that is biased closed and that is opened when a hose connector (20) coupling member is attached to the bag valve coupling member. The one-way valve (70) prevents back- filling (reuse) of the bag and syrup substitution.