Difference between revisions of "Walami pump"
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Revision as of 02:45, 20 October 2012
The Walimi Pump is a conventional lever action handpump for lifting water from low to medium deep wells. It is designed for small to medium sized communities of up to 250 persons. Besides the 3” (Ø76 mm) cylinder configuration, recommended to maximum lift of 25 m, a 2” version (Ø50 mm) cylinder is used for lifts up to 40 m. The riser pipes are made of PVC-HI and are connected by threads. The bearings for the lever action are made of specially treated hardwood.
The Walimi Pump is a public domain pump defined by RWSN specifications. This pump is corrosion resistant, is quite easy to install and it has very good potential for community-based maintenance.
Suitable conditions
Ø3” cylinder for depths of 5-25 m. Ø2” cylinder for depths of 20-40 m.
| Cylinder diameter: | 50.0 mm or 62.5 mm |
| Maximum Stroke: | 170 mm |
| Approx. discharge (75 watt input): | at 5 m head: 2.0 m³/hour
at 10 m head: 1.3 m³/hour |
| Pumping lift: | 2 - 40 m |
| Population served: | ~ 250 people |
| Households: | 25 - 30 hh |
| Based on water consumption of: | 15 - 20 l/per capita |
| Type of well: | borehole or dug well |
