Sanitary fluid handling controls

  • US 20020056826A1
  • Filed: 11/14/2001
  • Published: 05/16/2002
  • Est. Priority Date: 11/16/2000
  • Status: Abandoned Application
First Claim
Patent Images

1. A membrane sealed sanitary valve comprising:

  • a valve body having a top flanged opening and a valve body seat;

    a top cap attached to said top flanged opening and having a parts capsule removably attached inside said top cap, said parts capsule comprising;

    a valve stem;

    at least one stem vertical guide;

    at least one bearing surface responsive to said stem vertical guide;

    at least one seal designed to seal an internal pressure area of said valve from ambient conditions outside said valve, wherein said valve stem protrudes beyond said top cap and is designed to reciprocate and accommodate an operator;

    a valve gate attached to said stem and responsive to movement of said stem and;

    a telescoping membrane seal responsive to movement of said gate having a substantially semicircular reversing convolution, wherein said gate is designed to move said membrane seal against said valve body seat to intersect a flow passageway through said valve body without substantial stretching of said membrane seal by telescoping along an axis aligned with said movement of said gate.

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