Liquid purification or separation – Flow – fluid pressure or material level – responsive – Check valve
Patent
1988-11-08
1990-09-04
Spitzer, Robert
Liquid purification or separation
Flow, fluid pressure or material level, responsive
Check valve
55387, 1375124, 137856, 210282, 210287, 210446, B01D 2702, B01D 3515
Patent
active
049542524
ABSTRACT:
A biflow filter drier has a pair of flapper-type check valve assemblies for directing fluid flow unidirectionally through a centrally supported molded desiccant core. Each check valve assembly is a three part structure spot welded into a unitary assembly comprising a centering support plate, a core support cup and an intermediate flapper valve plate. Two flapper valves are formed from the valve plate and comprise the check valves covering valve openings in the suport plate and support cup. The material which formed the central opening in the support plate is bent at an angle to the support plate and provides an overtravel stop for the check valve. An angled surface of the core support cup provides an overtravel stop for the second check valve.
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Griffin Gary E.
Krause Walter O.
Baker James A.
Parker Hannifin Corporation
Spitzer Robert
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