Valves and valve actuation – Reciprocating valve – Gate
Patent
1990-06-05
1992-08-11
Rivell, John
Valves and valve actuation
Reciprocating valve
Gate
251329, 251332, F16K 300
Patent
active
051372614
ABSTRACT:
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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Leo L. R.
Rivell John
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