Measuring and testing – Measuring vessel
Patent
1979-03-23
1980-04-01
Swisher, S. Clement
Measuring and testing
Measuring vessel
251 62, G01N 110
Patent
active
041955250
ABSTRACT:
A fail-safe pneumatically operated by-pass sampling valve suitable for use n hazardous chemical processes utilizes a manually operated spool valve to initiate a pneumatically operated piston driven crank to rotate a sampling valve. The sampling valve withdraws a sample amount of fluid from a process line without disturbing normal process flow. A pneumatically connected spindle valve and a plurality of limiting valves are proximately positioned and operatively connected to the piston to automatically move the piston actuating member from a normally closed non-sampling position to a sampling position and then back to a normally closed non-sampling position.
REFERENCES:
patent: 1562121 (1925-11-01), Newton
patent: 1837858 (1931-12-01), Grace
patent: 2911953 (1959-11-01), Killian
patent: 3034359 (1962-05-01), Shaw
George David A.
Strauss Bernard D.
Weisman Irving H.
Edelberg Nathan
Gibson Robert P.
Swisher S. Clement
The United States of America as represented by the Secretary of
Yarmovsky Max
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