Abstract: A valve system has an apparatus formed with a plurality of material inlet ports, a flushing inlet port, and an outlet port and respective supplies of at last two different liquid materials. The supplies are each connected to a respective one of the material inlet ports, and a supply of flushing medium is connected to the flushing inlet port. A rotor at the apparatus is formed with a passage and shiftable between a plurality of positions in each of which a respective one of the inlet ports is connected to the outlet port. A controller moves the rotor between the positions such that, after each time the rotor is in a position connecting one of the material inlet ports to the outlet port and material has passed through the passage, the rotor is moved into a position connecting the passage with the flushing inlet port for flushing out the passage.

Abstract: A valve system has an apparatus formed with a plurality of material inlet ports, a flushing inlet port, and an outlet port and respective supplies of at last two different liquid materials. The supplies are each connected to a respective one of the material inlet ports, and a supply of flushing medium is connected to the flushing inlet port. A rotor at the apparatus is formed with a passage and shiftable between a plurality of positions in each of which a respective one of the inlet ports is connected to the outlet port. A controller moves the rotor between the positions such that, after each time the rotor is in a position connecting one of the material inlet ports to the outlet port and material has passed through the passage, the rotor is moved into a position connecting the passage with the flushing inlet port for flushing out the passage.

Abstract: An apparatus has a plurality of inlet ports each connectable to a material supply container and an outlet port. A disk-shaped valve body has a first side and an opposite second side with a straight throughgoing passage from the first side to the second side, the body being displaceable relative to the inlet ports to provide a switchable connection between a respective one of the plurality of inlet ports and the outlet port. The passage can be also be connected with a respective one of the various inlet ports to enable feeding of different materials successively to the outlet port. One of the inlet ports is a flushing medium inlet port of a flushing device, and the passage can connected with the flushing medium inlet port by displacement of the valve body for flushing the passage.