Mounting head with safety shut-off valve for replaceable filter

Details Mounting head with safety shut-off valve for replaceable filter Mounting head with safety shut-off valve for replaceable filter

1994-04-12

1996-01-23

Dawson, Robert A.

Liquid purification or separation

With repair or assembling means

Placement of container opens flow controller

210440, 210443, B01D 2708, B01D 2710

Patent

active

054862884

ABSTRACT:
A filter assembly adapted for connection between fluid supply and delivery lines to filter fluid flowing therethrough includes a replaceable filter cartridge having at one end concentric entrance and exit passages confined within an axially outwardly projecting annular wall and a mounting head having inlet and outlet ports adapted for substantially fixed connection to the supply and delivery lines, respectively. The mounting head has a cylindrical recess for sealingly receiving the annular wall of the filter cartridge therein, and the filter cartridge and the mounting head each have complementary interfitting ears and lugs thereon for permitting quick locked connection and unlocked disconnection of the filter cartridge to and from the mounting head incident to axial rotation of the filter cartridge in opposite directions, respectively, relative to the mounting head. A normally closed safety shut-off valve is disposed in the inlet passage of the mounting head and a valve operating cam on one end of the filter cartridge is provided for opening the valve incident to axial rotation of the filter cartridge into fully locked connection with the mounting head.

REFERENCES:
patent: 2978107 (1961-04-01), Gutkowski et al.
patent: 3746171 (1973-07-01), Thomsen
patent: 4529515 (1985-07-01), Selz

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