Ported gate valves, method and apparatus

Details Ported gate valves, method and apparatus Ported gate valves, method and apparatus

F - Mech Eng,Light,Heat,Weapons

16

K

F16K 3/02 (2006.01) F16K 3/30 (2006.01) F16K 27/04 (2006.01)

Patent

CA 2079488

2079488 9119121 PCTABS00008 An improved gate valve comprising spaced parallel housing walls having axially aligned apertures therethrough and constituting a housing; sleeves removably coupled to the housing walls and defining an annular space therebetween; a gate plate in sliding contact with the sleeves reciprocable between open and closed positions and defining a primary seal to atmosphere between the gate plate and sleeves; packing located adjacent to the upper edges of the housing walls through which the gate plate reciprocates between open and closed positions and defining a secondary seal to atmosphere between the gate plate and the packing; and means associated with the periphery of the housing walls to retain flowing fluid within the housing walls.

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