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  2. Rooftop water tower - Wikipedia

    en.wikipedia.org/wiki/Rooftop_water_tower

    Rooftop water towers atop apartment buildings on East 57th Street in New York City showing differing kinds of tank A highrise residential building with integrated water tank in Bremerhaven, Germany A rooftop water tower is a variant of a water tower , consisting of a water container placed on the roof of a tall building .

  3. Water softening - Wikipedia

    en.wikipedia.org/wiki/Water_softening

    Since these systems do not work by exchanging ions, like traditional water softeners do, one benefit claimed for the user is the elimination of the need to add salt to the system. Such systems do not remove minerals from the water itself. Rather, they can only alter the downstream effects that the mineral-bearing water would otherwise have.

  4. Standpipe (firefighting) - Wikipedia

    en.wikipedia.org/wiki/Standpipe_(firefighting)

    External access point for fire sprinkler and dry standpipe at a building in San Francisco, US Antique wet standpipe preserved at Edison and Ford Winter Estates. A standpipe or riser is a type of rigid water piping which is built into multi-story buildings in a vertical position, or into bridges in a horizontal position, to which fire hoses can be connected, allowing manual application of water ...

  5. Water tower - Wikipedia

    en.wikipedia.org/wiki/Water_tower

    Beaumont St. Louis and San Francisco Railroad Water Tank (1875, restored 2012), Beaumont, Kansas, US. Although the use of elevated water storage tanks has existed since ancient times in various forms, the modern use of water towers for pressurized public water systems developed during the mid-19th century, as steam-pumping became more common, and better pipes that could handle higher pressures ...

  6. Pressure tank - Wikipedia

    en.wikipedia.org/wiki/Pressure_tank

    The diaphragm or bladder may itself exert a pressure on the water, but it is usually small and will be neglected in the following discussion. Case 1 is an empty tank at the charging pressure P c (gauge). The total volume of the tank is V t. Case 2 is a tank in use, with the air pressure at pressure P (gauge) and a water volume of V

  7. Calgon (water softener) - Wikipedia

    en.wikipedia.org/wiki/Calgon_(water_softener)

    This product or company article is a stub. You can help Wikipedia by expanding it.