Device for filling a tank from a drum without producing pollution

Device for filling a tank (1) from a drum (2) without causing a contamination. adapter tank (3) with - an attachment flange to the tank (300) for fixing the tank and - a first coupling piece (301), as well as with - a connecting channel which can be closed (311), b. an adapter canister (4) with - an attachment flange to the drum (400) to fix the drum (2) and - a second coupling piece (401), and - a sealing piston (409) which is guided in the adapter drum (4) and which can be adjusted by a driving part (302) between the open position and the closed position, and - the piston plug (409) has an internal channel (409c) in the open position device establishes a fluid connection between the connection for washing (308) and the mounting flange to the drum (400), the tank adapter (3) and the adapter canister (4) joined together detachably being by the first and second coupling piece (301, 401), and the sealing plunger (409) has a first contact surface (409a) which is in active contact with a second contact surface (306a) provided on the adapter tank (3) when the second coupling piece (401) of the adapter canister (4) and t is coupled with the first coupling piece (301) of tank adapter (3) and with c. a connection for washing (308) for supplying cleaning fluid (6), which is placed in the tank adapter (3) and is connected to the connection channel can be closed (311), in which - the device in an open position establishes a fluid connection between the mounting flange to the drum (400) and the mounting flange to the tank (300) and a closed position interrupts the fluid connection between the mounting flange to the drum (400 ) and the mounting flange to the tank (300), and wherein - the second contact surface (306a) can separate from the first contact surface (409a), while the second coupling piece (401) of the adapter drum (4) is coupled with the first coupling piece (301) of tank adapter (3).