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PVC pumps

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{{Language-box|english_link= PVC pumps | 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=PVC水泵 | indonesian_link= Coming soon | japanese_link= Coming soon }} [[Image:Canzee_icon.png|right|80px]]

[[Image:Deep_well_pump.jpg|thumb|right|200px|PVC shallow well pump. <br>Photo: Designchoice.org.]]

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The name PVC pumps covers a large number of different hand pump designs, which have in common that most parts are constructed out of PVC. PVC is used because it is often cheap, and easy to work with. As PVC is less durable as other materials such as steel, a single PVC pump should be used by a limited number of people. Because of the low price, PVC pumps are often used as family pumps. Sometimes other types of Plastic are used, such as ABS, which is UV resistant.

Examples of PVC pumps are the [[EMAS pump]], the [[Canzee pump]] and the DTU pump. Some pumps are described in their own Akvopedia articles, reachable by clicking on the links above.

Some pumps, such as the [[EMAS pump]] are deep well pumps, and can pump water over a height difference of 40m. Others, such as the [[Canzee pump]] pump water up to 12-15 m deep. The [[DTU pump]] is used for extracting water from underground rainwater catchment cisterns.

Because of their lightweight and low-cost design, PVC pumps are mainly suitable to be used by families or small groups of families. PVC pumps are not recommended for use by large groups of people, as this will lead to the need of frequent maintenance. An excellent overview of community hand pumps, which are suitable for larger groups, is available at the RWSN website<ref>[http://www.rural-water-supply.net/en/implementationsustainable-groundwater-management/handpump-overview pumps Overview of community handpumps at the RWSN website]</ref>.

These pumps are very popular for domestic use, as shown by 20,000 water systems in Bolivia, which are made with locally available PVC tubing and valves made with marbles. PVC pumps are used in Malawi and Brazil and many other countries in combination with water storage tanks, for example in the kitchen. When used with a storage tank near the roof in a kitchen, running water becomes available in the kitchen, often considered a great luxury.

Because the water is pumped immediately to the storage tank without intermediate handling, the quality of the water remains good and the risk or recontamination is greatly reduced.

===Suitable conditions===

{| border="1" cellpadding="5" cellspacing="0" align="centernone"

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

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

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| valign="top" | - Low cost <br>

|}

 ===Construction, operations and maintenance===

[[Image:Deep_well_pump.PNG|thumb|right|200px|EMAS type pump produced and used in Malawi]]

The maintenance that is needed depends on the design of the pump. In some designs, the bottom valve will need to be replaced periodically. Valves are often made of rubber.

===Costs===

PVC pumps can be made very cheap. An EMAS pump can be made for about 5$, with 1$ extra for every meter of depth.

==Field experiences== ==Reference manualsManuals, videos, and links===* [http://bushproof.biosandfilter.org/index.php?id=73 Info on Canzee pump] by Bushproof. The [http://www.bushproof.biosandfilter.orgcom/assetsproducts/fileshand-pumps/Canzee_brochure_version_240506.pdf brochure on the Canzee pump] can be downloaded.

* [[EMAS pump| EMAS pump Akvopedia article]]

*[httphttps://wwwvimeo.emas-international.decom/englishchannels/index_e.htm emas EMAS website in EnglishVimeo channel]

* BRAND, A. P. (2004) [http://www.rural-water-supply.net/en/resources/details/289 Low-cost pump alternatives for rural communities in Honduras. Meeting demand for access to safe drinking water], Water and Sanitation Program (WSP), Lima, Peru

* [http://www.geocities.com/h2oclubs/ Information on the Baptist pump]

* [http://www2.warwick.ac.uk/fac/sci/eng/research/dtu/pubs/tr/rwh/tr-rwh09.pdf Low cost handpumps for water extraction from below ground water tanks] by DTU.

==Acknowledgements=References===

<references>

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