Patent ID: 7066200

Claim:
An insert for being mounted in a valve housing ( 80 ) or a tubular member for dynamic flow control of a flowing medium, which insert comprises: a first cup-shaped part ( 1 ) provided with an outflow area comprising at least one axial outflow slot ( 2 ) provided in a sidewall ( 3 ) of the first cup-shaped part; a second cup-shaped part ( 10 ) arranged axially displaceably within the first cup-shaped part ( 1 ) and provided with an inflow area; a pressure spring ( 30 ) arranged for exerting a force (f) that seeks to force the two cup-shaped parts ( 1 , 10 ) away from each other; said second cup-shaped part ( 10 ) being configured such in relation to the first cup-shaped part ( 1 ) that the at least axial outflow slot ( 2 ) provided in the sidewall ( 3 ) of the first cup-shaped part ( 1 ) is closed in response to a displacement of the second cup-shaped part ( 10 ) in relation to the first cup-shaped part ( 1 ), wherein the inflow area of the second cup-shaped part ( 10 ) comprises at least one axial inflow slot ( 12 ) provided in a sidewall ( 18 ) of the second cup-shaped part ( 10 ), which inflow slot ( 12 ) is closed in response to the displacement of the second cup-shaped part ( 10 ) in relation to the first cup-shaped part ( 1 ).