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  2. Powerhead (pump) - Wikipedia

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

    An aquarium powerhead is typically used to create flow throughout the tank.For example, a single powerhead could be used at one end of a freshwater aquarium to simulate a laminar river current, or multiple powerheads can be positioned throughout the aquarium to create more turbulent flow.

  3. List of pump action rifles - Wikipedia

    en.wikipedia.org/wiki/List_of_pump_action_rifles

    A pump action rifle is a rifle where the forend can be moved forward and backward in order to eject a spent round of ammunition and to chamber a new one. Pump-action mechanisms are often regarded as faster than a bolt action and somewhat faster than a lever action, as it does not require the trigger hand to be removed from the trigger while reloading.

  4. Remington Model 572 - Wikipedia

    en.wikipedia.org/wiki/Remington_model_572

    The Remington Model 572 Freemason is a manually-operated, slide-action rimfire repeating rifle manufactured by the Remington Arms Company. The 572 is noted for its similarity to the Remington 870 shotgun in design. The 572 is chambered for the .22 Short, .22 Long and .22 Long Rifle cartridges. Ammunition is supplied by a tubular magazine under ...

  5. Remington Model 572 Fieldmaster - Wikipedia

    en.wikipedia.org/wiki/Remington_Model_572_Field...

    The Remington Model 572 Fieldmaster is a slide action, manually-operated .22 caliber (rimfire) repeating rifle manufactured by Remington Arms Company. First introduced to the commercial market in 1956, the 572 Fieldmaster rifle incorporates a tubular magazine capable of feeding .22 Short, .22 Long, or .22 Long Rifle rimfire cartridges, a cross-bolt safety, and an aluminum receiver grooved for ...

  6. Affinity laws - Wikipedia

    en.wikipedia.org/wiki/Affinity_laws

    The affinity laws (also known as the "Fan Laws" or "Pump Laws") for pumps/fans are used in hydraulics, hydronics and/or HVAC to express the relationship between variables involved in pump or fan performance (such as head, volumetric flow rate, shaft speed) and power. They apply to pumps, fans, and hydraulic turbines. In these rotary implements ...

  7. Circulator pump - Wikipedia

    en.wikipedia.org/wiki/Circulator_pump

    The following parameters are characteristic for the circulating pumps: capacity Q, pump pressure ∆p (delivery head ∆H), energy consumption P with pump unit efficiency η, impeller rotational speed n, NPSH and sound level L. In practice, the graphical relationship between the values Q, ∆ p(∆H), P and η is used.

  8. Centrifugal pump selection and characteristics - Wikipedia

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

    This is a crucial parameter for pump selection and is a popularly used parameter for ascertaining industrial requirements. By eliminating the inlet head, we remove the effect of the supplied pressure to the pump and are left with only the pump’s energy (head) contribution to the fluid flow. Schematic representation of pressure heads in a pump.

  9. Hand pump - Wikipedia

    en.wikipedia.org/wiki/Hand_pump

    First European depiction of a piston pump, by Taccola, c.1450. [2] Irrigation is under way by pump-enabled extraction directly from the Gumti, seen in the background, in Comilla, Bangladesh. One sort of pump once common worldwide was a hand-powered water pump, or 'pitcher pump'.