An interface device for an apparatus for holding and discharging drums comprising: - a cylindrical tubular element extending along a predetermined longitudinal axis (X-X) and having opposite open ends, respectively a first end and a second end; - a first closure located proximate to said first end and - a second closure located proximate to said second end, wherein: - each of said closures (3, 4) can be operated to reversibly move from a closed state to an open state in which it respectively shuts and clears the passage defined by the respective ends (2a, 2b) and - each of said closures (3,4) comprises: • a respective first portion (3a, 4a) rigidly joined to said cylindrical tubular element by releasable fixation means, to be removed from the cylindrical tubular element and replaced and • a respective second portion rigidly joined to an operating member to allow each operating member to actuate each closure between said closed and open states, wherein said releasable fixation means comprise quick-release fixation means, characterized in that: said quick-release fixation means are pneumatically or hydraulically operated and comprise elements that can be deformed and/or inflated/deflated by changes in pneumatic or hydraulic pressure or said quick-release fixation means are mechanically operated and comprise elements that can be deformed or undergo changes in configurations or changes by deformation of parts or changes in the configuration of mechanical parts that can be achieved using elastically deformable elements and/or mechanisms undergoing changes in the configuration/geometry of mechanical parts. - a cylindrical tubular element extending along a predetermined longitudinal axis (X-X) and having opposite open ends, respectively a first end and a second end; - a first closure located proximate to said first end and - a second closure located proximate to said second end, - each of said closures (3, 4) can be operated to reversibly move from a closed state to an open state in which it respectively shuts and clears the passage defined by the respective ends (2a, 2b) and - each of said closures (3,4) comprises: • a respective first portion (3a, 4a) rigidly joined to said cylindrical tubular element by releasable fixation means, to be removed from the cylindrical tubular element and replaced and • a respective second portion rigidly joined to an operating member to allow each operating member to actuate each closure between said closed and open states, • a respective first portion (3a, 4a) rigidly joined to said cylindrical tubular element by releasable fixation means, to be removed from the cylindrical tubular element and replaced and • a respective second portion rigidly joined to an operating member to allow each operating member to actuate each closure between said closed and open states, wherein said releasable fixation means comprise quick-release fixation means, characterized in that: said quick-release fixation means are pneumatically or hydraulically operated and comprise elements that can be deformed and/or inflated/deflated by changes in pneumatic or hydraulic pressure or said quick-release fixation means are mechanically operated and comprise elements that can be deformed or undergo changes in configurations or changes by deformation of parts or changes in the configuration of mechanical parts that can be achieved using elastically deformable elements and/or mechanisms undergoing changes in the configuration/geometry of mechanical parts. said quick-release fixation means are pneumatically or hydraulically operated and comprise elements that can be deformed and/or inflated/deflated by changes in pneumatic or hydraulic pressure or said quick-release fixation means are mechanically operated and comprise elements that can be deformed or undergo changes in configurations or changes by deformation of parts or changes in the configuration of mechanical parts that can be achieved using elastically deformable elements and/or mechanisms undergoing changes in the configuration/geometry of mechanical parts.