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  2. Lead service line - Wikipedia

    en.wikipedia.org/wiki/Lead_service_line

    Secondly, the pH level decreased over time. Thirdly, the chloride level was higher than treated Detroit's water. The combination of these factors contributed to the corrosiveness of the water, causing corrosion to lead and iron pipes. [57] The solution was to change the water source back to Detroit's water supply and replace 30,000 lead service ...

  3. Piping and plumbing fitting - Wikipedia

    en.wikipedia.org/wiki/Piping_and_plumbing_fitting

    Flared connectors should not be confused with compression connectors, which are generally not interchangeable. Lacking a compression ring, they use a tapered conical shaped connection instead. A specialized flaring tool is used to enlarge tubing into a 45º tapered bell shape matching the projecting shape of the flare fitting.

  4. Corrosion inhibitor - Wikipedia

    en.wikipedia.org/wiki/Corrosion_inhibitor

    The effectiveness of a corrosion inhibitor depends on fluid composition and dynamics. Corrosion inhibitors are common in industry, and also found in over-the-counter products, typically in spray form in combination with a lubricant and sometimes a penetrating oil. They may be added to water to prevent leaching of lead or copper from pipes. [2]

  5. Copper conductor - Wikipedia

    en.wikipedia.org/wiki/Copper_conductor

    The wire provides connections that will not corrode or creep. It is not, however, compatible with aluminium wire or connectors. If the two metals are joined, a galvanic reaction can occur. Anodic corrosion during the reaction can disintegrate the aluminium. This is why most appliance and electrical equipment manufacturers use copper lead wires ...

  6. Contact resistance - Wikipedia

    en.wikipedia.org/wiki/Contact_resistance

    For experimental characterization, a distinction must be made between contact resistance evaluation in two-electrode systems (for example, diodes) and three-electrode systems (for example, transistors). In two-electrode systems, specific contact resistivity is experimentally defined as the slope of the I–V curve at V = 0:

  7. Fretting - Wikipedia

    en.wikipedia.org/wiki/Fretting

    Fretting also occurs on virtually all electrical connectors subject to motion (e.g. a printed circuit board connector plugged into a backplane, i.e. SOSA/VPX). Commonly most board to board (B2B) electrical connectors are especially vulnerable if there is any relative motion present between the mating connectors. A mechanically rigid connection ...

  8. Soldering - Wikipedia

    en.wikipedia.org/wiki/Soldering

    Building codes currently almost universally require the use of lead-free solder for drinking water piping (and also flux must be approved for drinking water applications), though traditional tin-lead solder is still available. Studies have shown that lead-soldered plumbing pipes can result in elevated levels of lead in drinking water.

  9. Copper tubing - Wikipedia

    en.wikipedia.org/wiki/Copper_tubing

    Soft (or ductile) copper tubing can be bent easily to travel around obstacles in the path of the tubing. While the work hardening of the drawing process used to size the tubing makes the copper hard or rigid, it is carefully annealed to make it soft again; it is, therefore, more expensive to produce than non-annealed, rigid copper tubing.

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