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High-pressure valve

  • US 3,927,693 A
  • Filed: 10/11/1974
  • Issued: 12/23/1975
  • Est. Priority Date: 10/11/1974
  • Status: Expired due to Term
First Claim
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1. A high-pressure valve comprising a valve body having a cylindrical chamber therein, said chamber having an inlet port with an axis which is perpendicular to the axis of said chamber, a first set of two outlet ports having axes which are perpendicular to the axis of said chamber and which lie in a plane common to the axis of said inlet port, each of said first outlet ports having a cross-sectional area equal to said inlet port, said first set of outlet ports being disposed one on each side of said inlet port at equal angles from said inlet port, the angle between the axis of said first outlet ports and the axis of each said Inlet port being less than 90*, and a second set of two outlet ports having axes which lie in said plane, each of said second set of outlet ports having a cross-sectional area greater than the area of said inlet port and being disposed at equal angles from said inlet port, the angle between each axis of said second set of outlet ports and the axis of said inlet port being greater than 90* but less than 180* ;

  • a cylindrical valve core rotatably mounted in said chamber, said core having a Y-shaped configuration of three communicating passageways having axes disposed within said plane, two of said passageways being disposed so as to communicate simultaneously with said inlet and one of said first set of outlets while simultaneously the third passageway communicates with one of said second set of outlets; and

    means attached to said core for rotating said core to align said passageways with said inlet and outlets;

    the angles between the axes and the cross-sectional area relationships between said inlet port, said outlet ports and said passageways being selected such that when fluid under pressure is present in said valve the vector forces on said valve core due to the pressure of the fluid are essentially balanced to zero so said valve core can be easily rotated.

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