Abstract: A teat rubber cup comprising a head member substantially rotationally symmetric with a longitudinal axis, with an aperture for insertion of the teat, a retaining edge to engage over a teat cup sleeve, and a suction stub joined to the head member, the end of the head member opposite the teat insertion aperture merging into the retaining edge. The wall of the head member is stiffened in a region located between the teat insertion aperture and the transition to the retaining edge, and the upper end of the suction stub merges into this stiffened part of the head member. The part of the teat rubber cup head located between the stiffened part and the retaining edge is made at least partly elastic. During the suction phase a compressive force acts on the section of the head member located between the stiffened part of the head member and the retaining edge, the force endeavouring to move that section towards the outside of the suction stub.

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.