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 If your kitchen sink permits remember the water injection pump of your school days. Allows a vacuum of about 25mbar (68°F); that means: 97.5% of the air is gone. "Pin It")
This is a nice idea and easy to use. I would look for a miniature cheap check valve and place it underneath the cap. (bike valve?) If your kitchen sink permits remember the water injection pump of your school days. Allows a vacuum of about 25mbar (68°F); that means: 97.5% of the air is gone.
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