Patent attributes
A regulating insert for insertion in a valve housing or the like in a flowing medium, comprising comprises a pre-setting means for regulation and/or setting of amounts of liquid in installations with flowing media for the limitation of the medium to a pre-set maximum amount, independently of a differential pressure working across the valve. The insert further comprises a tubular regulating element which is displaceable in a housing (3) in the longitudinal direction of the regulating insert, and lies up against a spring element (13) so that upon displacement the tubular regulating element (2) respectively opens or closes a number of openings (9) in the housing (3). The tubular regulating element (2) is influenced for regulation by a membrane, where the membrane (14) is a roller membrane, the roller membrane (14) being fastened along an outer diameter to the inner side of the housing (3) and along an inner diameter is fastened to the outer surface of the regulating element (2). The resulting forces stemming from the differential pressure across the membrane (14) lie on the same cylinder surface as that which extends through a slide surface (12) between the largest diameter of the regulating element (2) and the smallest diameter of the housing (3).
