F - Mech Eng,Light,Heat,Weapons – 16 – K
Patent
F - Mech Eng,Light,Heat,Weapons
16
K
251/73
F16K 3/30 (2006.01) F16K 3/02 (2006.01)
Patent
CA 1223240
ABSTRACT OF DISCLOSURE A gate valve assembly for controlling flow of fine particulate solids, utilizng dual seating surfaces and a slidable gate which are either or both purged by an outflowing gas. The valve body is con- structed in two split parts, and the body seat surface contains a conduit spaced outwardly from the seat and having a plurality of spaced openings oriented radially inwardly. The gate contains multi- ple passageways and is connected to a stem adapted for supplying a flow of pressurized purge gas to the passageways arranged to prevent deposits of the particulate solids passing therethrough on the valve seating surfaces. The valve is usually used for high temperature service, e.g. at 300 - 1000 °F., the valve body and grate are cooled by a vent gas, and the valve body is covered with thermal insulation material. The valve is usually located within the lower end of an insulated container and controls the flow of particulate solids from the container.
450137
Foster Wheeler Energy Corporation
Meredith & Finlayson
LandOfFree
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