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[–] WatchListMe ago 

Not a very informative video.

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

Check valve is usually what craps-out. Airsoft pellet 6mm works as ball replacement.

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

The "one way valve" (I.e., the check valve) does have a moving part in it: a rubber stopper.

Still, the idea of using boiling water to run an air lift is ingenious.

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

Doesn't the check valve count as a moving part?

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

So... 1 moving part.

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[–] dman57 0 points 1 point (+1|-0) ago 

i love this coffee

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

Building a gun based on same principles .

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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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