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Lavatory service shut-off valve

  • US 7,331,365 B2
  • Filed: 02/28/2003
  • Issued: 02/19/2008
  • Est. Priority Date: 02/28/2002
  • Status: Expired due to Fees
First Claim
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1. A shut off valve for regulating fluid flow comprising:

  • an inlet passage in intermittent fluid communication with an outlet passage;

    a flapper body movable between a rest position and a seal position between said inlet passage and said outlet passage; and

    an actuator that moves said flapper body from said rest position toward said seal position, wherein the actuator comprises a float adapted to change position based on a fluid level;

    wherein said flapper body is positioned so that inlet fluid flow assists said actuator in moving said flapper body into said seal position; and

    a bypass passage, in fluid communication with the outlet passage, that diverts a small portion of the fluid to rinse the actuator.

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