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  2. Water softening - Wikipedia

    en.wikipedia.org/wiki/Water_softening

    Water softening is the removal of calcium, magnesium, and certain other metal cations in hard water. The resulting soft water requires less soap for the same cleaning effort, as soap is not wasted bonding with calcium ions. Soft water also extends the lifetime of plumbing by reducing or eliminating scale build-up in pipes

  3. Uniform Plumbing Code - Wikipedia

    en.wikipedia.org/wiki/Uniform_Plumbing_Code

    The code has been widely used over the past five decades by jurisdictions throughout the United States and internationally. With the publication of the 2003 Edition of the Uniform Plumbing Code, another significant milestone was reached. For the first time in the history of the United States, a plumbing code was developed through a true ...

  4. Ball valve - Wikipedia

    en.wikipedia.org/wiki/Ball_valve

    A ball valve is a flow control device which uses a hollow, perforated, and pivoting ball to control fluid flowing through it. It is open when the hole through the middle of the ball is in line with the flow inlet, and closed when it is pivoted 90 degrees by the valve handle, blocking the flow. [1]

  5. Reduced pressure zone device - Wikipedia

    en.wikipedia.org/wiki/Reduced_pressure_zone_device

    Some normal water use conditions may cause short episodes of discharge (this is why check one has a minimum passing value of relief +3. It is designed to handle the pressure fluctuations). In the case of the upstream check valve passing, the differential pressure (higher supply pressure compared with the lower chamber pressure) causes any flow ...

  6. Plumber - Wikipedia

    en.wikipedia.org/wiki/Plumber

    Plumbing work is defined in the Australian Standards (AS3500) Regulations 2013 and refers to any operation, work or process in connection with installation, removal, demolition, replacement, alteration, maintenance or repair to the system of pipes and fixtures that conveys clean water into and liquid waste out of a building.

  7. AOL Mail - AOL Help

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    Get answers to your AOL Mail, login, Desktop Gold, AOL app, password and subscription questions. Find the support options to contact customer care by email, chat, or phone number.

  8. PS4 error codes and how to fix them - AOL

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    For premium support please call: 800-290-4726 more ways to reach us

  9. Plumbing - Wikipedia

    en.wikipedia.org/wiki/Plumbing

    Due to its toxicity, most cities moved away from lead water-supply piping by the 1920s in the United States, [36] although lead pipes were approved by national plumbing codes into the 1980s, [37] and lead was used in plumbing solder for drinking water until it was banned in 1986. [36]