How much vaccum pressure can a 5 gallon water bottle withstand?
If a plastic bottle is filled with water, sealed, turned upside down, the "top" is put in a pool of water, then opened, gravity will try to pull the water out. Air is not allowed into the bottle. This pulls the sides of the bottle inward. If the wall of the bottle is too weak, the air with crush the sides. A 2 liter soda bottle will crumble, but how with a 5 gallon bottle hold up?
it depends on how thick the walls are.
a 5 gallon single neck borosilicate distillation flask can withstand several atmospheres of vacuum pressure.
a 5 gallon shower bottle will collapse like a paper cup.
if you are using a 5 gallon glass jug, it can hold SOME vacuum pressure.
on the other hand, a 5 gallon chemical carboy is designed to have vacuum pulled on it, and it can handle a lot of pressure. (many atmospheres of vacuum)
i have two schott duran bottles which can take over 10 ATM of negative pressure. (they were EXPENSIVE).
a five gallon water cooler bottle will not hold much vacuum pressure.
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