Liquid purification or separation – Flow – fluid pressure or material level – responsive – Fluid pressure responsive by-pass
Patent
1989-12-15
1991-01-15
Jones, W. Gary
Liquid purification or separation
Flow, fluid pressure or material level, responsive
Fluid pressure responsive by-pass
210133, 210232, 210238, 210437, 210453, B01D 35147
Patent
active
049851420
ABSTRACT:
In order to facilitate release of a filter by-pass valve (10) for filter element replacement in relatively inaccessible locations, the valve (10) includes a housing (12) defining a filter chamber (14) having an inlet (16) communicating with the filter chamber (14) at one end (18) of the housing (12) and an outlet (20) communicating with the filter chamber (14) at the other end (22) of the housing (12). An integral filter-valve assembly (24) is removably positionable within the housing (12) between the inlet (16) and outlet (20). The filter-valve asssembly (24) supports a filter element (26) within the filter chamber (14) in a manner defining a primary flow path from the inlet (16), through the filter element (26), and to the outlet (20). The filter-valve assembly (24) also includes a by-pass valve (28) defining a secondary flow path from the inlet (16) to the outlet (20). A handle (30) integral with the filter-valve assembly (24) extends to a point externally of the housing (12) for removing the filter-valve assembly (24) from the filter chamber (14) to replace the filter element (26). The valve also includes a retention blade (32) retractably extendable into a groove (34) in the housing (12) which is push button operable for selectively retaining the filter-valve assembly (24) within the housing (12). With this arrangement, a mechanism (38, 40) may also be provided for mechanically ensuring retention blade extension into the groove (34) in the housing (12) while also rendering the push button (62) selectively inoperable from an externally accessible location.
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Laycock John E.
Ramirez Ray C.
Jones W. Gary
Savage Matthew O.
Sundstrand Corporation
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