Patent Number: 6,293,336

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

Abstract: 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.

Inventors: Emerick, Sr.; Richard John (Freeport, IL), Leiser; Joel Ernst (Freeport, IL), Howerter; Michael John (Lanark, IL), Pottinger; Jan Michael (Lanark, IL), Brockhouse; Rick W. (Lanark, IL), Gatz; Stephen E. (Morrison, IL), Worden; James Donald (Savanna, IL)

Assignee: Elkay Manufacturing Company

International Classification: C22F 1/08 (20060101); F25D 31/00 (20060101); F28D 1/00 (20060101); F28D 1/06 (20060101); F28D 007/00 ()

Expiration Date: 09/25/2018