Valve with heat responsive bearing assembly providing back...

Details Valve with heat responsive bearing assembly providing back... Valve with heat responsive bearing assembly providing back...

F - Mech Eng,Light,Heat,Weapons

16

K

251/56

F16K 41/02 (2006.01)

Patent

CA 1156638

ABSTRACT The bearing assembly of a normally non-rising stem gate valve is provided with an annulus of fusible material. Upon subjection to a preselected temperature level, the fusible body melts out of the way, permitting the stem to raise slightly, making up a metal-to-metal seal between the valve stem and bonnet. This forms another line of defense against consequences from loss of the sealing normally provided by the valve stem packing.

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