Ideas at Work, in conjunction with project partner Resource Development International (RDI), have developed the Cambodian version of the popular rope pump. Our first model taken in production in 2006, the standard ‘RP6’ 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. Flow rates are typically around 40ltr at 5m deep (with 28mm pistons).
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 around US$75 – 130.
Over the years and with design improvements the RP8 model a galvanized and comes now with 8 meter of piping and a cement cover. This makes it ideal for improving and protecting open hand dug wells and will last for over 10 years. 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 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).
Over 6500 Rovai installations all over Cambodia are benefiting over 250,000 people daily with easier and cleaner water. After 6 years all the surveyed pumps are still working and the users keep reporting their satisfaction. Read more in the Client satisfaction surveys on this page.
Other rope pumps models include the ‘Pond pump’ which improves access to water at ponds, lakes and slow moving rivers. Double handle pump for schools and a cheaper family pump. 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. And we are currently exploring the possibilities for a solar rope pump.
For more details on design features and production please click here.
More info: firstname.lastname@example.org
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)|