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Jiggle syphon (wikipedia.org)
14 points by curtis on Jan 28, 2019 | hide | past | favorite | 2 comments

The actual term for what is essentially a check valve in a bottom of a pipe appears to be "inertial pump", as searching for that phrase brings up many relevant results, including this one with a good illustration of how it works:


These work great! Bought one years ago to empty out our bird feeder in mosquito season: https://www.amazon.com/dp/B000BG1X54/

Only annoyance is that small leaves and twigs get stuck in the ball chamber but it’s easy to clean it with pinkie finger or a stick.

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