rope pump

• Raising water from a well with a hand-pump is hard work – and requires a lot of energy.
• To satisfy a family’s domestic water needs, it may be necessary to pump (and carry) 100 litres every day. However this is very little compared with the amount of water required for even quite modest amounts of irrigation.
• It requires a power delivery of about 90 Watts - which is what a fairly healthy human can sustain over time, or what can be delivered by a modestly sized solar panel.
• A vacuum pump of 90 watts capacity can suck water up from atmospheric pressure, in theory this limit is about 20 m. However in practice the maximum depth water can sucked is more like 17-18 m. This means that all the pumps located at ground level are limited to draw water from this depth.
• The rope pump unique means that the weight of the water column inside pumps pipe is spread across all pistons and the water is pushed rather than “sucked”.
• The pump can therefore draw water from an unlimited depth with keeping the bulk mechanism above ground.
• The water pressure remains relatively low throughout.