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Bush pump
The bush pump, also known as the Zimbabwe bush pump, is a positive displacement pump based on lever action 〔() 〕 used to extract water from a bore hole well. It is the standard hand pump in Zimbabwe, and is used in large parts of Africa. There are approximately 40 000 pumps (2009) in Zimbabwe, and annually about 3000 pumps are installed.〔()〕 ==History== The original version was designed in 1933 as a closed-top cylinder pump. Around 1960 the design was modernized. The base of the well was from then on bolted to the well casing. It was at this point the pump got its current name, and this design became the national standard for hand pumps in Zimbabwe.〔()〕 After Zimbabwe’s independence in 1980, the government created its own modernized version of the pump, B-type Zimbabwe Bush Pump. The new pump integrated the features from the earlier pumps. This is the current standard 〔 (2009). The pump is today regarded by many as a national treasure, and was in 1997 pictured on its own postal stamp.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Bush pump」の詳細全文を読む
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