Pipe joint lead stop and method

Details Pipe joint lead stop and method Pipe joint lead stop and method

1991-07-15

1992-08-11

Heinrich, Samuel M.

Metal fusion bonding

Process

Encasing a rodlike core within a substantially coextensive...

228216, 228 50, 285287, B23K 100

Patent

active

051372029

ABSTRACT:
An article for providing a barrier between solder in a piping joint and the interior of the piping joint so that drinking water flowing therethrough is not contaminated by lead particles resulting from water flow erosion of the solder. The barrier article comprises an annular member a portion of which engages the inner surface of an inner pipe portion and a radially outwardly extending portion of which engages the end of the inner pipe portion and extends radially beyond the outer surface of the inner pipe portion to act as a barrier between solder in the annulus between the inner and an outer pipe portion and the interior of the joint. An indicator may be provided on the inner pipe portion adjacent the joint to assure the user of the piping system that the article was installed. In order to insure that an indicator is installed each time a barrier article is installed, the indicator and article may be marketed as a unit wherein each is attached to a respective end of a spacer, which is removed prior to soldering. The article may be press-fit within or integral with the outer pipe portion.

REFERENCES:
patent: 3528688 (1970-09-01), Stenerson
patent: 3963162 (1976-06-01), Taguchi et al.

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