Abstract: A wash booth (1) for containers comprises a platform (3) for supporting a container (2), a wall (4) equipped with a watertight door (5) and means for washing the inside walls of the container comprising infrared radiant elements (13).

Abstract: A unit for discharging loose material from a dispensing device to a user unit comprises a discharge tube leading to the user unit and a valve element connecting the dispensing device to the infeed end of the tube. The valve element comprises a first annular element equipped with a shutter device, consisting of a first shutoff element and a second shutoff element connected to each other by permanent magnets, and a second annular element connected to the infeed end of the tube. When the first and second annular elements are separated by the operation of pistons, a gap is created between the two shutoff elements. A pair of concentric seals positioned between the first and the second annular elements isolate the gap from the outside environment so that a cleaning fluid can be made to flow into it.