A delivering device of liquids contained in water crocks, said delivering device being equipped with an assembly for replacing water crocks with bag-in-box (BIB) vessels for delivery, said assembly being adapted to perform a placement and a connection of the BIB vessels on the delivering device, the assembly comprising:
- a main supporting and containing body;
- at least one plate connected to said main supporting and containing body and adapted to place thereon at least one BIB vessel;
- at least one connector connected to said main supporting and containing body through a flexible hose and adapted to be connected to a delivering tap of the at least one BIB vessel;
- at least one plug connected to said main supporting and containing body and adapted to be connected to a pin of said delivering device;
- at least one connecting tube placed in said main supporting and containing body and connected to said flexible hose for communicating said at least one BIB vessel with said delivering device;
- and
- at least one check valve assembly placed in said main supporting and containing body and adapted to be connected to and be contained in said at least one plug to prevent liquid from re-entering into said main supporting and containing body,
- wherein the delivering device is further equipped with at least an inspection plate constrained to the main supporting and containing body through a hinge, adapted for inspecting a connection between the at least one connector and the main supporting and containing body.