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Rope pump

72 bytes added, 13:08, 7 September 2011
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====Manufacturing and Materials====
The rope pump can be produced with locally available standard materials and local skills. Artisan , such as an artisan workshop: small scale production of handpumps in small workshops with few tools using locally available materials.
The frame is welded from mild steel; . The handle axle is a mild steel pipe (some design use bearings, either ball bearings or wooden bearings, other employ a steel bush; bushing. The pulley wheel is assembled by fitting the cut -off sides of a tyre on a rim; , which generates a nice 'v' shape which provides good traction on the rope. The ropes are made of Polyethylene, Polypropylene, or Polyamide fibres varying from Ø 4 to Ø 8 mm; . Natural fibres are not suitable, as they will lengthen when wet, and degrade too fast. The pistons are injection moulded plastic with no seal; . The rising main are PVC pipes ranging from ND20 to ND50 20-50mm diameter (depending on lift); . The guide box is can be made of concrete with a ceramic insert (some designs use cast in glass bottles; Screens are not used), only coarse filtersor made of wood with a pvc lining.
====Installation====
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