Patent ID: 7128087

Claim:
A regulating insert for insertion in a valve housing disposed in a flowing medium, comprising pre-setting means for regulation and/or setting an amount of flowing medium for limiting the flow of the medium to a pre-set maximum amount, independently of a differential pressure working across the valve housing, a tubular regulating element ( 2 ) which is displaceable within a housing ( 3 ) in a longitudinal direction of the regulating insert ( 1 ) and which lies up against a spring element ( 13 ), so that upon displacement, the tubular regulating element ( 2 ), via its outer edge, respectively opens or closes a number of openings ( 9 ) in the housing ( 3 ), said tubular regulating element ( 2 ) being influenced for regulation by a membrane ( 14 ), the membrane being a roller membrane ( 14 ), said roller membrane ( 14 ) fastened along an outer diameter to the inner surface of the housing ( 3 ), and fastened along an inner diameter to an outer surface of the regulating element ( 2 ), so that resulting forces provided above the preseting means form a differential pressure across the membrane ( 14 ), with a pressure inside the regulating element ( 2 ), extending through a slide surface ( 12 ) provided between the largest diameter of the regulating element ( 2 ) and the smallest diameter of the housing ( 3 ).