Ideas at work, in conjunction with project partner Resource Development International
(RDI), have developed the Cambodian version of the popular rope pump. Our standard
'RP6' model is simple to install, operate and maintain and has been designed to
fit on hand dug wells and bore holes (or drilled wells) – one design fits both.
ROVAI is Khmer for "turning something by hand". The pump is made from stock steel
which is protected with a 3-part paint system, and is also fitted with stainless
steel nuts and bolts which makes the ROVAI a very durable low-cost pump.
The standard RP6 model comes with 8 meter of piping and a cement cover.
This makes it ideal for improving and protecting open hand dug wells.
All pumps come with an operation and maintenance manual (Khmer language) which contains numerous step by step line drawings making it easy to follow.
This and other manuals in both Khmer and English can be downloaded from the links at the bottom of this page.
All materials used for the Rovai pumps can be found in Cambodian markets so this makes spare parts problems a thing of the past.
Flow rates are typically around 40ltr at 5m deep (with 28mm pistons).
Other rope pumps models include the 'Pond pump' which improves access to water at
ponds, lakes and slow moving rivers. We have also developed a 'Pedal pump' which is
advantageous on deeper wells or where larger quantities of water are needed e.g.
irrigating small gardens.
For more details on design features and production please click here.
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Riser pipe sizes for varying depths are shown below:
| Lift height |
Piston or riser pipe size |
| 0-5m |
42mm or 28mm (depending on flow rate required) |
| 5m-10m |
28mm |
| 10-18m |
23mm |
| 18-30m |
18mm |
| 30-40m |
16mm |
General lift heights and standard riser pipe sizes
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