Fluid handling – With means for separating solid material from the fluid
Patent
1988-06-03
1989-07-11
Michalsky, Gerald A.
Fluid handling
With means for separating solid material from the fluid
1372695, 137512, 13753311, 137550, 210136, 2101982, F16K 1504
Patent
active
048462187
ABSTRACT:
A check valve with a disposable filter is provided for regulating the flow of a mobilizing liquid in a pump of a liquid chromatograph. The valve assembly includes two seated ball valve subassemblies securely housed in a casing to define a liquid flow path therethrough. A portion of one valve subassembly extends beyond the valve casing and is received by a valve end cap. The valve end cap has an aperture which is aligned with the flow path defined by the valve subassemblies. The apertured end of the end cap has a tapered perimeter for receiving a correspondingly tapered end seal. The end seal has an apertured end wall with a filter received in the aperture and is adapted to be removably mounted on the tapered edge of the end cap, thereby removably mounting the filter to the valve assembly and requiring only the force of the user's fingers to attach and remove the filter.
REFERENCES:
patent: 3661167 (1972-05-01), Hussey
patent: 3810716 (1974-05-01), Abrahams et al.
patent: 4045343 (1977-08-01), Achener et al.
patent: 4139469 (1979-02-01), Rainin et al.
patent: 4282897 (1981-08-01), De Mey
patent: 4387736 (1983-06-01), Major
patent: 4636316 (1987-01-01), Harris et al.
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