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  2. Hydraulic calculation - Wikipedia

    en.wikipedia.org/wiki/Hydraulic_calculation

    The hydraulic calculation procedure is defined in the applicable reference model codes such as that published by the US-based National Fire Protection Association (NFPA), [2] or the EN 12845 standard, Fixed firefighting system – Automatic sprinkler systems – Design, installation and maintenance.

  3. Center-pivot irrigation - Wikipedia

    en.wikipedia.org/wiki/Center-pivot_irrigation

    A satellite image of circular fields characteristic of center pivot irrigation, Kansas Farmland with circular pivot irrigation. Center-pivot irrigation (sometimes called central pivot irrigation), also called water-wheel and circle irrigation, is a method of crop irrigation in which equipment rotates around a pivot and crops are watered with sprinklers.

  4. Treadle pump - Wikipedia

    en.wikipedia.org/wiki/Treadle_Pump

    A treadle pump is a human-powered suction pump that sits on top of a well and is used for irrigation. [1] It is designed to lift water from a depth of seven metres or less. The pumping is activated by stepping up and down on a treadle , which are levers, which drive pistons, creating cylinder suction that draws groundwater to the surface.

  5. Irrigation sprinkler - Wikipedia

    en.wikipedia.org/wiki/Irrigation_sprinkler

    An oscillating sprinkler is commonly used to water residential lawns, and is moved as needed. Home lawn sprinklers vary widely in their size, cost, and complexity. They include impact sprinklers, oscillating sprinklers, drip sprinklers, underground sprinkler systems, and portable sprinklers. Permanently installed systems may often operate on ...

  6. Circulator pump - Wikipedia

    en.wikipedia.org/wiki/Circulator_pump

    A circulator pump or circulating pump is a specific type of pump used to circulate gases, liquids, or slurries in a closed circuit with small elevation changes. They are commonly found circulating water in a hydronic heating or cooling system.

  7. Water pumping - Wikipedia

    en.wikipedia.org/wiki/Water_pumping

    Due to the rotation, water is then picked up by the tube and pumped upwards in the hose. The coil pump, as many low lift pumps, is commonly used for irrigation purposes and for drainage of lands. It is currently still used by farmers in Asia. [1] The coil pump was built as an alternative to the Archimedean screw. Unlike the Archimedean screw ...

  8. K-factor (fire protection) - Wikipedia

    en.wikipedia.org/wiki/K-factor_(fire_protection)

    In fire protection engineering, the K-factor formula is used to calculate the volumetric flow rate from a nozzle. Spray nozzles can for example be fire sprinklers or water mist nozzles, hose reel nozzles, water monitors and deluge fire system nozzles.

  9. Distribution uniformity - Wikipedia

    en.wikipedia.org/wiki/Distribution_uniformity

    Distribution uniformity or DU in irrigation is a measure of how uniformly water is applied to the area being watered, normally expressed as percentage, and not to be confused with efficiency. [1] The distribution uniformity is often calculated when performing an irrigation audit. The DU should not be confused with the coefficient of uniformity ...