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Flow control device having selectable alternative fluid pathways

  • US 5,154,693 A
  • Filed: 05/15/1990
  • Issued: 10/13/1992
  • Est. Priority Date: 05/15/1990
  • Status: Expired due to Term
First Claim
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1. A fluid control device, comprising:

  • an inlet;

    an outlet;

    a first fluid flow pathway between the inlet and the outlet;

    a second fluid flow pathway between the inlet and the outlet;

    at least two valves for restricting the flow of fluid through the device, the valves being situated serially within the first fluid flow pathway between the inlet and the outlet; and

    means for selectively directing fluids through one of the first or the second fluid flow pathways, wherein the first fluid flow pathway directs fluid through the at least two valves, and the second fluid flow pathway bypasses at least one of the valves and directs fluid through at least another one of the valves.

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