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Treadle pump

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{{Language-box|english_link= Treadle pump | french_link= Coming soon | spanish_link= Coming soon | hindi_link= Coming soon | malayalam_link= Coming soon | tamil_link= Coming soon | swahili_link=coming soon | korean_link= Coming soon | chinese_link=脚踏式水泵 | indonesian_link= Coming soon | japanese_link= Coming soon }} [[Image:Treadle_pump_icon.png|right|80px]][[Image:Treadle_pump.PNG|thumb|right|250px200px| The treadle pump is used in Bangladesh. Photo: Netherlands Water Partnership.]][[Image:treadle pump2.jpg|thumb|right|250px200px|A simple, bamboo treadle pump can be constructed. Photo: International Development Enterprises.]][[Image:malawi treadle pump.jpg|thumb|right|250px200px|The Malawi treadle pump is a high capacity treadle pump designed to lift water from shallow wells & surface sources. Photo: [http://www.skipumps.com/malawipump.htm S.K. Industries.]]]__NOTOC__

The treadle pump is a foot-powered water pump widely used in Asia and spreading in Africa. It consists of two metal cylinders with pistons that are operated by a natural walking motion on two treadles.

'''There are several variations of the treadle pump:'''

* The River Pump: is mounted on a portable metal stand so that it can be easily moved from one water source to another. It is used to pump from surface water sources. It requires an inlet hose for suction. A borehole is not required.

* The Metal Treadle Pump: incorporates permanently attached metal treadles, which increases portability. It can be mounted on a borehole (like the basic Treadle Pump) to draw from groundwater sources. It can be mounted on a metal frame (like the River Pump) to draw from surface water sources.

Currently, over 2 million treadle pumps have been installed worldwide. Up to 1.3 million treadle pumps are in use Asia, and some 35,000 in Eastern Africa. They are being produced in 300 local workshops worldwide and used by more than one million poor rural families that otherwise could not have afforded an irrigation pump.

===Suitable conditions ===

The treadle pump can be used on small farms which draw irrigation water from 1-7 m deep. A treadle pump can pump around 100 litres / min from 4 meters depth.

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! width="50%" style="background:#efefef;" | Advantages

! style="background:#ffdeadf0f8ff;" | Disadvantages

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| valign="top" | - Simple and cheap

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<br>===Construction, operations and maintenance===[[Image:TreadleDiagram.png|thumb|right|250px200px|Treadle pump diagram. Click image to zoom. <br>Photo: [http://en.howtopedia.org/wiki/How_to_Build_Human-Powered_Water-Lifters Howtopedia.]]]

====Design====

* Cylinder diameter: 3.5 inch and 5 inch (90mm - 130mm)

If designed correctly, treadle pumps can be easily maintained with standard replacement parts available in local markets at a low cost. All repairs can be done without the use of tools.

===Costs===

The treadle pump is very cost-effective. Its low cost makes it accessible to even very poor farmers who can use it to grow dry-season vegetables for home consumption and for sale. In Bangladesh, a pump costs US$ 20. On average, farmers are able to generate more than US$100 per year in extra income. Income from treadle pumps adds US$100 million to the GNP of Bangladesh annually. Production and sales are sustainable now without external aid.

With this technology, many families have increased their income. Some farmers who started with this pedal pump have now bought a motorized pump.

* The cost of introduction lies around US$ 20,000 per project, including training, engineering and first production.

===Field experiences===

The Treadle Pump is widely used in Asia, and increasingly used in Africa.

===Manuals, videos, and links===

* [http://www.ashdenawards.org/winners/idei Ashden Award article on Treadle Pumps by IDE-India]

* [http://www.ide-india.org/ide/treadlepumpbambootreadlepump.shtml aspx Bamboo Treadle Pump programme, IDE-India]

* [http://www.kickstart.org MoneyMaker treadle pump produced by Kickstart (Kenya, Tanzania)]

* [http://www.ideorg.org International Development Enterprises (IDE)]

* [http://www.enterpriseworks.org/display.cfm?id=5&sub=11&cont=6 Pedal Pump, produced by Enterprise Works]

* [[Solution_of_the_week_2|Akvo water solution of the week 2]]

* [http://www.rural-water-supply.net/en/implementation/handpumppublic-overviewdomain-handpumps/treadle-pump RWSN: Treadle Pump]

* [ftp://ftp.fao.org/docrep/fao/005/x8293e/x8293e00.pdf Treadle pumps for irrigation in Africa.]

====Videos===={|style=" font-size: 125%"

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|{{#ev:youtube|HAOG-yHW9QY|200|auto|<center>Spark Africa 3 - Treadle pump <br>revolution in rural Zambia</center>}}

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{|style=" font-size: 125%"

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|{{#ev:youtube|EIMXcUvry7E|200|auto|<center>Treadle Pumps in <br>Nepal - Part 4</center>}}

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===Acknowledgements===* [http://www.washdoc.info/docsearch/title/124276 SmartWater Solutions Examples of innovative, low-cost technologies for wells, pumps, storage, irrigation and water treatment] or ([http://www.googleircwash.comorg/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=0CFEQFjAA&url=http%3A%2F%2Fwww.nwp.nl%2F_docs%2Fpublicaties%2FSmart_Water_Solutions_ENG_2006.pdf&ei=dKYEUPeYA4fg2QW8qdjMBQ&usg=AFQjCNE9tTXI9rJyLrJCYiS2z9bWSPnK5Q&sig2=pJx8UnMMK0p0zEzn5n5xEQ resources/smart-water-solutions-examples-innovative-low-cost-technologies-wells-pumps-storage alternative link]). Netherlands Water Partnership, 2006.

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