Apparatus for safely installing and removing spring failsafe actuator
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 6, 2001
Grant Date -
N/A
app pub date -
Nov 18, 1999
filing date -
Nov 18, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Apparatus for safely installing and removing spring loaded failsafe valve actuators. The apparatus includes a frame that retains a compression spring in a loaded condition between a cover plate fastened to the top wall of the frame and a spring seat slidably contained inside the frame. The spring seat is attached to the valve stem for moving reciprocally therewith between a closed and an open position. The stem is connected to the extendable rod of a remotely controlled actuator that is mounted in the cover plate and arranged to move the stem between the closed and open positions. In the event the actuator fails while the valve is in an open position, the compressed failsafe spring is released to rapidly close the valve.
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