The Malda Pump as a direct action pump is based on a buoyant pump rod that is directly articulated by the user, discharging water during the up & down stroke.
==Suitable conditions==
The Malda Pump is specially designed for production in developing countries.
This pump is like most of the “Direct Action Pumps” (DAP) limited to pumping lifts of a maximum of 15 m. It is recommended not to go deeper than 12 m.
==Construction, operations and maintenance==
Pump stand, standing plate and handle are made of galvanised steel, wearing sleeve of stainless steel, pump rods and rising main of HDPE pipe and plunger & foot valve are also made of HDPE.
This makes the Malda Pump completely corrosion resistant.
The installation of the Malda Pump is very easy and does not need any lifting equipment or special tools. The rising main with foot valve and pump head as well as the pump rod with handle and plunger can be assembled on the ground. When laid next to each other, the correct length can be checked. For installation both, rising main and pump rod do not need to be dismantled again.
This pump has an excellent “Community Management Potential”. Only simple tools are needed to pull out the entire pumping element as well as foot valve and rising main.
==Acknowledgements==
* [http://www.rural-water-supply.net/en/implementation/handpump-overview/malda-pump Implementation • Handpump Technology: Malda Pump.] RWSN.
