Ventilanordning til bortledning af et fluidmedium og fremgangsmåde til styring af en ventilanordning

摘要

The arrangement (100) has a back-flow prevention valve (120) arranged between inlet and outlet openings (101, 102) in an installation position and above a through-flow prevention valve (110) i.e. tube valve, in a gravitational force direction. A control device blocks the through flow prevention valve such that a residue portion of medium to be discharged forms a blocking layer in the direction above the through-flow prevention valve. A surface (140) of the layer is arranged in the direction above a back-flow output (122) of the back-flow prevention valve.