A quick-disconnect coupling device for use in plug and receptacle style electrical connectors, fiberoptic connectors, pneumatic and hydraulic couplings or any other application where a secure quick-disconnect connection is desired. The balloon further has a valve assembly having bi-directional functions, i. In addition, the merchandising system comprises an assembly for advancing the articles toward the front of the base, wherein the assembly comprises a member configured to extend beyond the base to create a second space for containing the articles in addition to the first space. The linkage device is adapted for communication with the float such that the float may facilitate in adjusting the position of the valve member with respect to a first end portion of the second conduit in response to a liquid level in a liquid reservoir.