Elkay Manufacturing Company

Stephen E Gatz

Ralph F Stanford

Joel Ernst Leiser

Richard John Emerick, Sr

Jan Michael Pottinger

James Donald Worden

Rick W Brockhouse

Michael John Howerter

A process for annealing copper or copper-containing components, such as copper tubing, and/or for selecting copper with an appropriate grain size, such that potable water in contact with the properly treated and/or selected copper, has substantially decreased copper emissions, and may comply with ANSI/NSF 61. In one preferred embodiment, an ANSI/NSF 61-compliant water cooler may be constructed using a storage tank with wrapped copper water tubing treated and/or selected in this manner. The storage tank is preferably designed from non-copper components.

Process for forming copper containing components providing water effluent with lowered copper concentrations

A process for annealing copper or copper-containing components, such as copper tubing, and/or for selecting copper with an appropriate grain size, such that potable water in contact with the properly treated and/or selected copper, has substantially decreased copper emissions, and may comply with ANSI/NSF 61. In one preferred embodiment, an ANSI/NSF 61 -compliant water cooler may be constructed using a storage tank with wrapped copper water tubing treated and/or selected in this manner. The storage tank is preferably designed from non-copper components.

Process and apparatus for use with copper containing components providing low copper concentrations portable water

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.

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

Replaceable filter cartridge for actuating safety shut-off valve in

Replaceable filter cartridge and head assembly with safety shut-off valve

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Galt, IL, United States of America

Stephen E Gatz