Check valve arrangement for a diagnostic test point
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United States of America Patent
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Jun 25, 2002
Grant Date -
N/A
app pub date -
May 11, 2000
filing date -
Jun 25, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention provides a check valve for a test point for taking pressure measurements or fluid samples in a pressurized fluid system, said check valve including a housing having a bore and a movable valve body located in said bore, one end of said housing adapted to receive a pressure measuring probe for taking said pressure measurements or fluid samples, said one end of said housing including an upper bore section within which, in use, said pressure measuring probe is located wherein said movable valve body includes an end, located in said upper bore section, of nominal diameter less than the nominal diameter of said upper bore section. The invention further provides a check valve for a test point for taking pressure measurements or fluid samples in a pressurized fluid system, said check valve including a housing with a bore passing therethrough, a movable body located in said bore for providing opening and closing of said check valve, and a seal located on said movable valve body for providing sealing between said valve body and said bore wherein said check valve includes a collar means located or said movable valve body to support and expand sad seal. The invention also provides a test point including respective check valves.
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