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[–] Jimmycog 0 points 1 point (+1|-0) ago 

Bubble pumps are cool. Also used in refrigerator of certain types.

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[–] derram 0 points 2 points (+2|-0) ago 

https://invidio.us/watch?v=4j4Q_YBRJEI :

Coffee Maker: Pumping water with no moving parts - YouTube


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