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Method and apparatus for testing and using membrane filters in an on site of use housing

  • US 4,384,474 A
  • Filed: 05/20/1981
  • Issued: 05/24/1983
  • Est. Priority Date: 10/30/1980
  • Status: Expired due to Fees
First Claim
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1. Apparatus for integrity testing and using membrane filter means at the site of use, comprisinga base and a cover releasably connected to said base thereby forming a housing which defines a filter chamber;

  • a membrane filter disposed within said housing and dividing the filter chamber into an inlet area on one side of said membrane filter and an outlet area on the opposite side of said membrane filter;

    said housing having an inlet in communication with the inlet area of said chamber, an outlet in communication with the outlet area of said chamber and vent means communicating with said inlet area at the upper portion of said chamber;

    said inlet adapted at particular times to be selectively closed, connected to a source of test fluid during test of said membrane filter and to a source of fluid to be filtered during use of said membrane filter;

    said outlet adapted at particular times to be selectively closed, connected to a return line for said test fluid during test and to a delivery line for said filtered fluid during use;

    said vent means adapted at particular times to be selectively closed and connected to a source of controlled air pressure; and

    a flow condition indicating means communicating with the outlet area at the upper portion of said chamber, and having valve means for controlling flow through said indicating means.

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