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PVC pumps

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[[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.
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="none"
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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== ==Manuals, videos, and links===
* [http://bushproof.biosandfilter.org/index.php?id=73 Info on Canzee pump] by Bushproof. The [http://bushproof.biosandfilter.org/assets/files/Canzee_brochure_version_240506.pdf brochure on the Canzee pump] can be downloaded.
* [[EMAS pump| EMAS pump Akvopedia article]]
* [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.
===References===
<references>
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