Heat sensitive fire safe valve energy assist device
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United States of America Patent
Stats
-
Mar 19, 1985
Grant Date -
N/A
app pub date -
Aug 11, 1983
filing date -
Aug 11, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Disclosed is a heat sensitive fire-safe valve energy assist device. The device includes a cup that is mountable exterior of the valve body to transmit forces thereto. The device also includes a pusher that is mountable about the valve stem to transmit force thereto. A spring or the like is provided for urging the cup and pusher axially apart, thereby to apply outwardly directed forces between the stem and the valve body. A fusible element is provided for releasably interlocking the pusher and cup at normal operating temperatures, but for allowing the pusher and cup to move with respect to each other when temperatures exceed a preselected level. The movement of the pusher with respect to the cup is limited, thereby to reduce the risk of injury to operating personnel.
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