Flow line control system
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United States of America Patent
Stats
-
Feb 5, 1980
Grant Date -
N/A
app pub date -
Nov 21, 1977
filing date -
Nov 21, 1977
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
There is disclosed a system wherein a valve in a line is moved between flow controlling positions by means of a fluid-operated actuator. The admission and exhaustion of line fluid to and from the actuator is controlled by sensors which are automatically responsive to predetermined high and low pressures of the line fluid.
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