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Orifice trim and backpressure plate for high pressure valves

  • US 4,249,574 A
  • Filed: 03/09/1978
  • Issued: 02/10/1981
  • Est. Priority Date: 03/09/1978
  • Status: Expired due to Term
First Claim
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1. In a passage-forming means for high pressure fluid flow, means to provide a controlled, gradual dissipation of fluid energy comprising(a) a plurality of contacting, rigid mating parts arranged across the flow path of said passage-forming means, and(b) fluid flow openings formed through and spaced across each of said parts to define flow through spaces for the fluid,(c) each of said openings including width and length dimensions of predetermined value such that each of said fluid flow openings acts as an expansion chamber for the fluid flowing therethrough,(d) each of the fluid flow openings of each of the mating parts being of uniform dimensions throughout the thickness of the part,(e) the centerpoint of each of the fluid flow openings lying at the vertex of an imaginary equilateral triangle with the centerpoints of two adjacent fluid flow openings being arranged at the other vertices of said equilateral triangle, whereby each opening overlaps three openings of a contiguous part to provide a continuous dividing of the fluid flow as it flows from each opening to the three openings of the contiguous part which are in an overlapping relation thereto.

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