Apparatus and method for inhibiting the leaching of lead in wate

Details Apparatus and method for inhibiting the leaching of lead in wate Apparatus and method for inhibiting the leaching of lead in wate

1997-05-27

2000-01-11

Sheehan, John

Stock material or miscellaneous articles

All metal or with adjacent metals

Composite; i.e., plural, adjacent, spatially distinct metal...

428610, 428644, 428647, 428675, 428642, 251368, 251356, 148269, B32B 1520

Patent

active

060133821

ABSTRACT:
A copper alloy plumbing fixture containing interdispersed lead particles coated non-continuously on a water contact surface to resist the leaching of lead into potable water systems. The leach resistant fixture is prepared by immersing conventional copper alloys in a bismuth nitrate solution, selectively and non-continuously coating the lead dispersoid particles on the water contact surface with bismuth, tin or copper.

REFERENCES:
patent: 4206268 (1980-06-01), Roemer et al.
patent: 5204006 (1993-04-01), Santoli
patent: 5544859 (1996-08-01), Coltrinari et al.
patent: 5632825 (1997-05-01), Coltrinari et al.

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