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High flow valve

  • US 5,447,286 A
  • Filed: 01/21/1994
  • Issued: 09/05/1995
  • Est. Priority Date: 01/21/1994
  • Status: Expired due to Term
First Claim
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1. A high flow valve comprising:

  • a well having an inner annular ridge, an outlet connected to said well above the annular ridge, a supply port connected to said well below the annular ridge and a vent hole in said well below the supply port;

    a diaphragm having an upper web forming an airtight seal around said well above the outlet, a lower web forming an airtight seal around said well between the supply port and the vent hole, a cylindrical member connecting the lower web to the upper web, a diaphragm wall across the cylindrical member and an annular ridge projecting radially out from the cylindrical member so as to form a seal against the inner annular ridge of said well when said high flow valve is in a closed state; and

    a pilot air chamber disposed above said diaphragm such that the upper web and the diaphragm wall are directly exposed to fluid pressure within said pilot air chamber, wherein said high flow valve achieves an open state upon application of sufficient pressure in said pilot air chamber to move said diaphragm so as to separate the annular ridge of the diaphragm from the inner annular ridge of said well permitting open fluid communication between the supply port and the outlet.

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