Patent ID: 7735514

Claim:
A device for regulating flow of a medium in either a heating or a cooling system, the device comprising: a combined valve which, within a common valve housing ( 1 ), having one part for pressure difference regulation ( 2 ) and one part for flow limitation ( 3 ), the combined valve also comprising measuring nipples ( 4 , 5 ) for measuring pressure levels and a stop valve function ( 6 ), a flow amount of the combined valve is regulated by a flow regulating valve part ( 3 ) in which the flow is restricted to a partial cylindrical opening formed by the combined action of a rotary gate ( 34 ) and an axial plunger ( 31 ) such that for any setting of the rotary gate ( 34 ) the axial plunger ( 31 ) controls a size of the opening and the flow rate in a linear fashion throughout an entire range of motion of the axial plunger ( 31 ); and the pressure difference regulation part ( 2 ) and the flow regulating valve part ( 3 ) are both mounted in the valve housing ( 1 ) and are fixed in the valve housing ( 1 ) by a top piece ( 13 ) via a locking nut ( 14 ).