| 主权项 |
1. A dispensing tap for a bag in box package having an outer rigid container and an inner flexible bag, the dispensing tap comprising:
a plug portion attachable to a spout of an inner flexible bag; a tap body portion extending away from the plug portion, the tap body portion including a central cavity extending therethrough and into the plug portion; a metered dispensing assembly extending through the central cavity of the plug portion, the metered dispensing assembly comprising: a cylinder having a first end and a second end, with an inlet at the first end; a piston slidably and sealingly positionable within the cylinder at the second end thereof, the piston including an inlet and an outlet, with a dispenser actuator, the piston slidable between a first position wherein the inlet of the piston is proximate the second end of the cylinder, thereby defining a first volume of the cylinder, to a second position wherein the inlet of the piston is moved toward the first end of the cylinder, thereby defining a second volume of the cylinder which is smaller than the first volume of the cylinder; a return spring biasing the piston into the first position; a lower valve associated with the cylinder proximate a first end thereof, the lower valve precluding the egress of a flowable material positioned within the cylinder upon direction of the piston toward the second position; and an upper valve associated with the piston, the upper valve precluding the ingress of material positioned between the upper valve and the outlet of the piston from entering the cylinder upon direction of the piston toward the first position. |
