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See-saw Pump, stainless steel | Order No. 5.18700| Richter Spielgeräte GmbH
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Dartmouth Humanitarian Engineering (DHE) - Kevin Francfort '15 tries out the water-pump seesaw at ProSynergy's Huancaho Yachaywasi. | Facebook
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Pump See-saw with valve assembly and two way distribution | Order No. 5.27026| Richter Spielgeräte GmbH
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See Saw Water Pump - YouTube
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