Duplex strainer

Details Duplex strainer Duplex strainer

2003-07-18

2009-06-09

Savage, Matthew O (Department: 1797)

Liquid purification or separation

Serially connected distinct treating with or without storage...

Parallel

C210S340000, C210S341000, C210S420000, C210S424000, C210S452000, C210S470000, C137S625210, C137S625430, C055S343000, C055S344000, C055S484000

Reissue Patent

active

RE040721

ABSTRACT:
A duplex strainer for straining material includes a housing, housing inlet port through which material enters the housing under pressure for straining and an outlet port through which strained material exits the housing. The housing includes a first strainer chamber having the first and second ports in separate fluid communication with the housing. A second strainer chamber includes third and fourth ports in separate fluid communication with the housing. The first port opposes the third port and the second port opposes the fourth port. A valve control structure includes a first three-way ball valve disposed within the housing for controlling fluid flow between the first port, third port and the housing. A second three-way ball valve is disposed within the housing to control fluid flow between the housing, second port and fourth port.

REFERENCES:
patent: 1018654 (1912-02-01), Elliot
patent: 3679060 (1972-07-01), Smith
patent: 3900401 (1975-08-01), Oliver et al.
patent: 4274445 (1981-06-01), Cooper
patent: 4496463 (1985-01-01), Desai et al.
patent: 4606820 (1986-08-01), Rea et al.
patent: 4921598 (1990-05-01), Desch

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