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  2. Bethlehem Waterworks - Wikipedia

    en.wikipedia.org/wiki/Bethlehem_Waterworks

    The Bethlehem Waterworks, also known as the Old Waterworks or 1762 Waterworks, is believed to be the oldest pump-powered public water supply in what is now the United States. The pumphouse, which includes original and replica equipment, is located in the Colonial Industrial Quarter of Bethlehem, Pennsylvania , between Monocacy Creek and Main ...

  3. Armstrong World Industries - Wikipedia

    en.wikipedia.org/wiki/Armstrong_World_Industries

    In 2011, Armstrong's net sales were $2.86 billion, with operating income of $239.2 million. [17] Armstrong Cabinets was sold by Armstrong World Industries to American Industrial Partners on October 31, 2012. Armstrong spun off its flooring business into a new company, Armstrong Flooring (NYSE: AFI) on April 1, 2016.

  4. Shotcrete - Wikipedia

    en.wikipedia.org/wiki/Shotcrete

    Concrete spraying systems with duplex pumps are mainly used for working with wet mixes. Unlike conventional concrete pumps, these systems have to meet the additional requirement of delivering a concrete flow that is as constant as possible, and therefore continuous, to guarantee homogeneous spray application. [1]: 6.1.2 Machines

  5. Boiler feedwater pump - Wikipedia

    en.wikipedia.org/wiki/Boiler_feedwater_pump

    A duplex steam pump has two sets of steam and water cylinders. They are not physically connected but the steam valves on the first pump are operated by the movement of the second pump's piston rod, and vice versa. The result is that there are no "dead spots" and the pump is always self-starting. [2]

  6. Hydraulic accumulator - Wikipedia

    en.wikipedia.org/wiki/Hydraulic_accumulator

    The first accumulators for William Armstrong's hydraulic dock machinery were simple raised water towers. Water was pumped to a tank at the top of these towers by steam pumps. When dock machinery required hydraulic power, the hydrostatic head of the water's height above ground provided the necessary pressure.

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