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Reversible quick exhaust valve

  • US 4,457,330 A
  • Filed: 02/11/1983
  • Issued: 07/03/1984
  • Est. Priority Date: 02/11/1983
  • Status: Expired due to Fees
First Claim
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1. An improved, reversible, quick exhaust valve, said valve comprising, in combination:

  • a. a valve housing defining a hollow interior, an entry port, a first exit port, a second exit port and a valve support positioned in said interior to define with said housing a narrow annular passageway between said entry port and said first exit port, said valve support extending from said second exit port toward said entry port; and

    ,b. a flexible resilient cup-shaped valve member comprising a plate having an annular depending wall spaced inwardly from the outer periphery of said plate, said housing adjacent said plate outer periphery being sloped to facilitate sealing of said entry port during back flow, said entry port and said second exit port being substantially in line with said plate disposed across that line, said valve member being disposed in said interior over said valve support, with said depending wall extending into said passageway, said valve member in the resting position having said plate block said entry port from said second exit port, said depending wall blocking said entry port from both of said exit ports, said depending wall being sufficiently flexible to permit flow of liquid from said entry port only to said first exit port and, during back flowing through said valve, said valve member being displaced by back flow liquid sufficiently to permit flow of that liquid from said first exit port through said passageway to said second exit port but blocking flow of that liquid to said entry port, said plate during said back flow being forced against the adjacent portion of said housing to seal off said entry port.

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