Heat sensitive fire safe valve energy assist device

Details Heat sensitive fire safe valve energy assist device Heat sensitive fire safe valve energy assist device

1983-08-11

1985-03-19

Cohan, Alan

Fluid handling

Destructible or deformable element controlled

Heat destructible or fusible

251268, F16K 1740

Patent

active

045052913

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.

REFERENCES:
patent: 3916930 (1975-11-01), Erickson
patent: 4421134 (1983-12-01), Bruton et al.

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