[[Image:Afridev bottom.jpg|thumb|right|250px|The Afridev pump with bottom support is a deeper pump than the Afridev pump. Photo: [http://www.rwsn.ch/prarticle.2005-10-25.9856177177/prarticle.2005-10-26.2582788867/prarticle.2008-12-04.2105225472/prarticle.2009-02-04.8005335105 RWSN.]]]
[[Image:Afridev bottom2.jpg|thumb|right|250px|The Afridev pump with bottom support. Photo: [http://www.rwsn.ch/prarticle.2005-10-25.9856177177/prarticle.2005-10-26.2582788867/prarticle.2008-12-04.2105225472/prarticle.2009-02-04.8005335105 RWSN.]]]
==Suitable conditions==
{|border="1" cellpadding="5"
|-
|Depths for use:
|between 50 - 80 m
|-
|Cylinder diameter:
|50.0 mm
|-
|Maximum Stroke:
|225 mm
|-
|Approx. discharge (75 watt input):
|at 50 m head: 0.55 m³/hour <br>
at 60 m head: 0.45 m³/hour <br>
at 70 m head: 0.4 m³/hour <br>
at 80 m head: 0.35 m³/hour
|}
Population served: up to 150 people,
Households: 10 – 15 households,
Water cons.: 15 - 20 l/per capita,
Type of well: borehole.
==Construction, operations and maintenance==