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Rope pump

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[[Image:RopePumpMozambique.JPG|thumb|right|200px|[[Rope pump| Rope pump]] on a borehole, made in a local workshop in Mozambique ]]

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The modern Rope Pump pump is a highly efficient, modern and low cost pump , it can be produced with local materials and one of the few designs that can be truly be operated and maintained totally at a village level. There are various modern developments of the ancient design but the The basic design of all pumps is has a wheel with a continuous loop of rope with pistons (or plastic washers) attached to it, that fit with a small clearance in the pump pipe. The low end of this pipe is at the bottom of the well. By turning the wheel the rope passes up through a plastic the PVC pump pipe with only a small clearance, thus allowing the pistons to push and pushes the water up and out of . At the top end of the pump pipe, the diameter increases and the water comes out via a Tee piece.

If produced and installed well, Rope pumps have proven highly successful prove to be sustainable and now there are hundreds of thousands somer hundred and twenty thousand of these pumps in use world wide and used for anything from community communal and domestic water supply to , irrigation and cattle watering. For irrigation, it Modern models can be used as a simple surface water diversion pump. For from wells down to as deep as 35 mand compared to imported hand pumps, rope Rope pumps are often three to five times cheaper and . Good quality pumps can last for 20 years or more sustainable than standard piston pumpsas is proven in Nicaragua where the first improved models that were installed in 1990 are still working. Rope pumps can be powered by hand, bicycle, motor, horse, or wind power.

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