×

DIAPHRAGM CONTROLLED BYPASS VALVE

  • US 20090278064A1
  • Filed: 05/08/2008
  • Published: 11/12/2009
  • Est. Priority Date: 05/08/2008
  • Status: Active Grant
First Claim
Patent Images

1. A diaphragm controlled bypass valve comprising:

  • a first valve housing having an inlet, an outlet and a flow pathway defined between said inlet and said outlet;

    a needle valve pin disposed at least partially within said flow pathway;

    a valve seat disposed within said first valve housing configured to receive a portion of said needle valve pin to close said flow path;

    a second valve housing connected to said first valve housing;

    a diaphragm extending radially within said second valve housing, said diaphragm and said second valve housing defining a first pressure chamber there between;

    a second pressure chamber defined between said diaphragm and said first valve housing;

    a sensing line connected to a bore in said second pressure chamber, said sensing line configured to provide a pressure change to said second pressure chamber to displace said diaphragm within said first pressure chamber; and

    a shaft assembly disposed between said diaphragm and said needle pin such that displacement of said diaphragm within said second pressure chamber moves said shaft to open and close said needle valve.

View all claims
  • 4 Assignments
Timeline View
Assignment View
    ×
    ×