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High-pressure-drop valve

  • US 3,917,221 A
  • Filed: 08/16/1974
  • Issued: 11/04/1975
  • Est. Priority Date: 08/20/1973
  • Status: Expired due to Term
First Claim
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1. A high-pressure-drop valve comprising:

  • a valve body having a liquid inlet, a liquid outlet, and a valve chamber provided between and communicating with said inlet and outlet;

    a cage of substantially hollow cylindrical shape fixedly accommodated within said valve chamber and comprising a plurality of cage units of hollow cylindrical shape having respectively different diameters and mutually fitted in a liquid-tight and concentric arrangement; and

    a valve member fitted in the hollow interior of said cage and adapted to undergo slidable displacement therewithin, each of said cage units having a plurality of orifices opening at one cylindrical surface of the cage unit and a plurality of holes communicating respectively with said orifices and opening at the other cylindrical surface of the cage unit, said orifices of the cage units being formed to have mutual positional relationships such that the centerline of any orifice of any one cage unit does not coincide with the centerline of a corresponding orifice of a cage unit adjacent to said one cage unit, each of said holes having a diameter greater than that of each of the orifices in a manner communicable with the orifice of the adjacent cage, whereby liquid which has passed through each orifice and correspondings hole of said one cage unit first collides against the inner concave cylindrical surface of an adjacent cage unit and then flows from said hole into the corresponding orifice of said adjacent cage unit.

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