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  2. Volute (pump) - Wikipedia

    en.wikipedia.org/wiki/Volute_(pump)

    Pump and volute casing. A volute is a curved funnel that increases in area as it approaches the discharge port. [1] The volute of a centrifugal pump is the casing that receives the fluid being pumped by the impeller, maintaining the velocity of the fluid through to the diffuser. As liquid exits the impeller it has high kinetic energy and the ...

  3. Centrifugal pump selection and characteristics - Wikipedia

    en.wikipedia.org/wiki/Centrifugal_pump_selection...

    Pump Characteristic curve; the head produced reduces with the discharge of the pump. Pump curves are quite useful in the pump selection, testing, operation and maintenance. Pump performance curve is a graph of differential head against the operating flow rate. They specify performance and efficiency characteristics.

  4. Total dynamic head - Wikipedia

    en.wikipedia.org/wiki/Total_dynamic_head

    In fluid dynamics, total dynamic head (TDH) is the work to be done by a pump, per unit weight, per unit volume of fluid.TDH is the total amount of system pressure, measured in feet, where water can flow through a system before gravity takes over, and is essential for pump specification.

  5. Centrifugal pump - Wikipedia

    en.wikipedia.org/wiki/Centrifugal_pump

    In self-priming centrifugal pumps with a separation chamber the fluid pumped and the entrained air bubbles are pumped into the separation chamber by the impeller action. The air escapes through the pump discharge nozzle whilst the fluid drops back down and is once more entrained by the impeller. The suction line is thus continuously evacuated.

  6. Water pumping - Wikipedia

    en.wikipedia.org/wiki/Water_pumping

    The spiral pump, as many low lift pumps, is commonly used for irrigation purposes and for drainage of lands. Based on the same principle as the Archimedean screw, it consists of a rotating tube or plane (screw) to move a liquid. Unlike the Archimedean screw, it can pump while horizontal. The Archimedean screw must be tilted at an angle.

  7. With SS United States set to be sunk, passengers ... - AOL

    www.aol.com/ss-united-states-set-sunk-235248023.html

    She had just learned to swim so she loved the large swimming pool, she said. At dinnertime in the banquet hall, "everybody dressed up," she said, and the captain sat with different tables every night.