Changes

Handpumps

1,055 bytes removed, 06:20, 2 November 2012

→‎Diaphragm pumps

'''Example of a diaphragm pump:''' [[Vergnet Hydro]]

Household-level handpumps, like the [[Rope pump]] or the [[Canzee pump]], are relatively cheap options for households to abstract water from a depth of more than 7 m. The rope pump uses washers on a rope that lift up the water through a rising main. The rope is transported down into the well using a rotating wheel at the surface. When turning the wheel, the pump operator lifts the washers and with them the water from the well. The structure is completed with an apron around the pump, a pump supporting construction, and an outlet through which the water flows into a bucket or can. A [[Canzee pump]] has two PVC tubes (with differring diameters) are used - one inside the other - with non-returning valves on the bottom side. When lowering the inside tube, the water enters in from the outside tube. When lifting the inside tube, its bottom valve closes and the water is lifted from the well. At the same time, the bottom valve of the outer tube opens and water flows into the pump. When the inside tube is lowered again, the process is repeated.

==Suitable conditions==

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