| 摘要 |
<p>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 ).</p> |
