Control valve assembly
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United States of America Patent
Stats
-
Sep 8, 1981
Issued Date -
N/A
app pub date -
Apr 9, 1980
filing date -
Jul 17, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A control valve assembly incorporates direct metal-to-metal engagement between a casing of a temperature-responsive valve actuator and a piston guide to promote ease and accuracy of calibration. In addition, a substantially frictionless override feature is incorporated in the assembly to effect pressure relief and to accommodate thermal excursion of the valve actuator beyond the travel required to effect the desired valve movement.
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