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  2. Water dispenser - Wikipedia

    en.wikipedia.org/wiki/Water_dispenser

    Originally, these bottles were manufactured at 3,5 or 6 US gallon capacity (11.4, 18.9 or 22.7 liters) and supplied to rented water cooler units. [4] These units usually do not have a place to dump excess water, only offering a small basin to catch minor spills.

  3. Village-level operation and maintenance (pumps) - Wikipedia

    en.wikipedia.org/wiki/Village-level_operation...

    During the first UN decade on water boreholes, hand-dug wells and tubewells were constructed and water pumps were provided to developing countries by various NGOs. Unfortunately this top down approach led to the installation of pumps, notable the India Mark II, that were difficult to maintain. VLOM pumps were designed to allow remote villages ...

  4. R-410A - Wikipedia

    en.wikipedia.org/wiki/R-410A

    R-410A is a refrigerant used in air conditioning and heat pump applications. It is a zeotropic but near-azeotropic mixture of difluoromethane (CH 2 F 2, called R-32) and pentafluoroethane (CHF 2 CF 3, called R-125). R-410A is sold under the trademarked names AZ-20, EcoFluor R410, Forane 410A, Genetron R410A, Puron, and Suva 410A.

  5. HC-12a - Wikipedia

    en.wikipedia.org/wiki/HC-12a

    HC-12a, also called ES-12a, OZ-12a, DURACOOL 12a [1] and Hydrocarbon Blend B, is marketed as a "drop-in" replacement refrigerant for R-12 and other refrigerants. HC-12a is a mixture of hydrocarbons, specifically propane (R-290) and isobutane (R-600a), and is therefore considered nearly non-ozone-depleting.

  6. Piston pump - Wikipedia

    en.wikipedia.org/wiki/Piston_pump

    Force pump. In a lift pump, the upstroke of the piston draws water, through a valve, into the lower part of the cylinder. On the downstroke, water passes through valves set in the piston into the upper part of the cylinder. On the next upstroke, water is discharged from the upper part of the cylinder via a spout.

  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. Drop-in replacement - Wikipedia

    en.wikipedia.org/wiki/Drop-in_replacement

    Drop-in replacement is a term used in computer science and other fields. It refers to the ability to replace one hardware or software component with another, without any other code or configuration changes being required and resulting in no negative impacts. Usually, the replacement has some benefits including one or more of the following:

  9. Soap dispenser - Wikipedia

    en.wikipedia.org/wiki/Soap_dispenser

    When soap is dispensed in liquid form, it is generally in a squeeze bottle or pump. The most popular soap dispensers of this type are plastic pump bottles, many of which are disposable. William Quick patented liquid soap on August 22, 1865. Minnetonka Corporation introduced the first modern liquid soap in 1980 and bought up the entire supply of ...

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