Valve for the reverse-flow flushing of teat cups in milking machinery

A valve for the reverse-flow flushing of teat cups in milking machinery, comprising:

• a housing with an interior and a channel to the atmosphere;
• a disk mounted for rotation in the interior of the housing;
• wherein the housing has three connections, a first connection for connecting with teat cups, a second connection for connecting with the milk line, and a third connection for connecting with a reverse-flow flush line, wherein the disk is rotatable into a milking position, into a reverse-flow position and into a rinsing position and wherein the disk has means permitting communication through the interior of the housing between the first and second connections and blocking the third connection when the disk is in the milking position, permitting communication through the interior of the housing between the first and third connections and blocking the second connection when the disk is in the reverse-flow position and permitting communication through the interior of the housing between the first and second connections while blocking the third connection and the channel when the disk is in the rinsing position.