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How do you put helium in a balloon?
- Bonnie (age 13)
Pickleswerth, Juneo, Alaska USA
Helium usually comes in steel tanks (called "cylinders") and is stored
under high pressure so you can fit a lot of it in a small space. Helium
is mostly gotten from oil and gas drilling -- it comes up with the
natural gas and can be separated out and sold in these steel tanks.
They are about three feet tall and maybe eight inches in diameter.
The tanks have a valve on the top called a "regulator" which
allows helium to be let out of the tank at a desired pressure, even
though the pressure in the tank may be very very high. It's a lot like
the regulators on scuba equipment. Another valve just opens and closes
to allow the helium to flow.
A ballon is wrapped around a spigot, the open-shut valve is
opened, and helium flows right into the ballon. You have to twist the
end of the balloon so helium doesn't escape while you tie the knot at
(republished on 07/30/06)
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