A multi-purpose batch-freezer machine (1) for producing ice-cream, confectionary creams and similar provided with an outer boxlike casing (2) and comprising: a vertical processing tank (4) that extends inside the boxlike casing (2), starting from the upper wall (2a) of the casing a horizontal processing tank (5) extending inside the boxlike casing (2), starting from the front wall (2b) of the casing, a drainage duct (20) that branches off from the vertical processing tank (4) to reach the front wall (2b) of the boxlike casing (2) and then protrudes cantilevered from the front wall (2b) of the casing with its end (20a) of substantially tubular cylindrical shape, roughly above the opening (5a) of the horizontal processing tank (5), and a manually operated tap (21) that is fixed on the end (20a) of the drainage duct (20), so as to protrude cantilevered from the front wall (2b) of the boxlike casing (2), and is structured so as to be fitted and then locked on said end (20a) of the drainage duct (20) in a rigid and stable, but easily removable way, by means of a bayonet locking mechanism.
