Valves and valve actuation – Mechanical movement actuator – Particularly packed or sealed
Reexamination Certificate
2006-01-31
2006-01-31
Jacyna, J. Casimer (Department: 3751)
Valves and valve actuation
Mechanical movement actuator
Particularly packed or sealed
C251S218000, C251S223000, C251S264000, C251S267000, C251S274000
Reexamination Certificate
active
06991216
ABSTRACT:
A valve, such as a liquid level sight glass gage valve, has a valve unit and a passageway that extends through the valve unit. The passageway has a stem receiving area, a seal receiving area, and a bonnet receiving area that has a non-circular inner perimeter. A packing assembly is provided to isolate the bonnet receiving area from the fluid path. A bonnet is located within the bonnet receiving areas and has a non-circular outside surface for mating relationship with the non-circular inner perimeter of the valve unit. A valve stem is in sealing relationship with the packing assembly and selectively engages a valve seat. The stem threadably engages the bonnet. A bonnet nut is threadably received on the valve unit for securing the bonnet within the valve unit and allowing axial movement of the bonnet against the packing assembly, thereby effecting compression of the packing.
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Contents, p. 2.
Fellers Snider Blankenship Bailey & Tippens, P.C.
Inferno Manufacturing Corporation
Jacyna J. Casimer
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