Sunday, May 6, 2007


The purpose of this blog is to document the development of a treadle type irrigation pump. Our efforts to accomplish this are currently funded by the Haiti Fund Inc.

So, you may be asking, what's a treadle pump? It's a foot powered water pump used for irrigation. It usully has two pedals, called treadles, that the pump operator stands on and operates with a walking motion. These treadles are connected to two cylinders with valves at the bottom that comprise a pump. There are two basic types of treadle pumps, lift pumps, and pressure pumps. Lift pumps have a practical limit to the distance they can lift water of seven or maybe eight meters. In Haiti, crops are grown on terraces at greater distances above the water source than that, so a pressure type pump is what's required, and that's what we're trying to design and build.

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