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Suction, lift, and treadle pumps made from PVC pipe. Designs, manufacturing processes, performance testing results.

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current21:07, 21 December 2010Thumbnail for version as of 21:07, 21 December 20101,275 × 1,650, 25 pages (3.18 MB)Jblongen (talk | contribs)Suction, lift, and treadle pumps made from PVC pipe. Designs, manufacturing processes, performance testing results.

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