Fire-resistant gate valve

Details Fire-resistant gate valve Fire-resistant gate valve

F - Mech Eng,Light,Heat,Weapons

16

K

137/4.5

F16K 17/38 (2006.01) F16K 3/02 (2006.01) F16K 41/14 (2006.01)

Patent

CA 1220401

(15) Abstract of the Disclosure A stew-operated fire-resistant gate valve includ- ing an improved metal-to-metal stew backseat fusible ring assemblies for facilitating automatic stem backseating at pre-selected temperatures, spring enhancement of the backseating procdure, and an improved metal-to-metal gate seat.

448746

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