Abstract: An automatic milk sorting device for use in machine milking, comprising a measurement device for measuring parameter values of the milk stream, a directional valve for directing the milk stream into various channels, and a control device for actuating the directional valve on the basis of the measured parameter values. According to the present invention, the directional valve comprises a housing provided with a milk inlet and a plurality of milk outlets, and a closure for selectively shutting off the milk outlets. The housing has arranged therein a measurement chamber which is in fluid communication with the interior of the housing via at least one opening and which is provided with a sensor for detecting parameter values. The structural design of a directional valve housing with an incorporated measurement chamber according to the present invention provides a compact, vacuum-tight construction and allows the device to be cleaned efficiently in a rinsing circuit.