Patents Assigned to Sempell GMBH
  • Patent number: 11598449
    Abstract: A control valve a body having a fluid inlet and a fluid outlet and a valve seat between the fluid inlet and the fluid outlet. A valve plug is positioned within the body and movable between a closed position, in which the valve plug sealingly engages the valve seat, and an open position, in which the valve plug is spaced away from the valve seat. A cage is disposed within the body adjacent the valve seat. The cage includes a cage wall having a throttling inlet and a throttling outlet, which are connected by a throttling passageway. The throttling passageway has a radial direction, an axial direction, and an angular direction between the throttling inlet and the throttling outlet. The passageway includes a plurality of vena contracta and a plurality of pressure recovery chambers, which form a plurality of pressure reducing stages.
    Type: Grant
    Filed: July 17, 2020
    Date of Patent: March 7, 2023
    Assignee: Sempell GMBH
    Inventors: Jürgen Von Der Lieck, Peter Ens, Marc Pollmann