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EMAS pump

373 bytes added, 20:46, 4 October 2012
→‎Costs
The piston gasket (made from the nylon-reinforced section of a used tire) can wear slowly over time and and must occasionally be replaced. This can be done easily and in less than an hour by a user that understands the simple operation of the pump. If the pump is constructed properly, there will be a range in which the gasket can be adjusted to achieve the proper balance between ease of pumping and hydraulic efficiency between replacements.
==Costs== The EMAS pump costs about US$ 5 (mainly the metal handle), with 1 US$ extra for each meter depth. (prices from Nicaragua, 2006). Cost of introduction (project cost with knowledge transfer, hands on training, plus 20 pumps): * Training: 1 day (depending on level of participants)* Materials for 20 pumps: US$ 100.* Tools: US$ 50 - 200 if everything has to be bought new.
==Field Experiences==
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