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

1994-06-03

1996-08-13

Chambers, A. Michael

Valves and valve actuation

Valve

Materials

251356, F16K 3100

Patent

active

055448593

ABSTRACT:
A copper alloy plumbing fixture containing interdispersed lead particles coated noncontinuously 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 noncontinuously coating the lead dispersoid particles on the water contact surface with bismuth. Tin may be substituted for bismuth to obtain similar results.

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patent: 4180398 (1979-12-01), Parikh
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patent: 4867116 (1989-09-01), de Freitas Couto Rosa et al.
patent: 4879094 (1989-11-01), Rushton
patent: 5137685 (1992-08-01), McDevitt et al.
patent: 5262124 (1993-11-01), Yamaji et al.

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