Patent ID: 8230884
Filing Date: 2012-07-31
Classification: F16F,F16K

Abstract:
1. A control valve with profiled packing element for making bidirectional flow-through with asymmetric intensity possible in a flow area, the packing element having a first surface which can be abutted against a second surface formed within the valve housing, said packing element having a first position in which said first surface and said second surface abut against one another, and a second position in which said first surface and said second surface are distant from one another; characterized in that at least one of the surfaces from said first surface of said packing element and said second surface within said valve housing is provided with a damage by means of which when said packing element is in its first position a first cross-section of flow is ensured between said abutting first and second surfaces, said first cross-section of flow being smaller than a second cross-section of flow ensured by said packing element when it is in its second position, and one of said first and second surfaces being a hard surface formed from metal, plastic or ceramic material, the other being formed from plastic, rubber or other elastic material, wherein the compressed elastic material is narrowing down said damage due to a pressure difference on the two sides of the packing element in its first position and wherein the transition between said first and second position of said profiled packing element is ensured on the basis of pressure difference and gravitational or lifting force by means of a control plug fastened thereto, by suitably selecting the specific weight of said control plug relative to the flowing.