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Haven't watched the videos (laundry), but I'm wondering.... Any bicycle pump has a check valve. What happens if you just revere that. Pull up to suck.
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.Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster
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.Because much of what is in the published literature is nonsense,
and much of what isn’t nonsense is not in the scientific literature.
-- Sabine Hossenfelder
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