Helium escape valve?
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Helium escape valve?
by andrema Thu 05 Aug 2010, 12:46 pm
What is the function of the helium escape valve used for?
The helium escape valve was specially developed for use by professional divers. During deep-sea dives lasting several days, divers operate from diving bells. Prior to surfacing, these bells are filled with a mixture of helium and oxygen. The helium molecules are lighter than air and can therefore penetrate the watch in sufficient quantity to push out the crystal at atmospheric pressure levels. This can be avoided by opening the valve during resurfacing, which allows the helium to escape but prevents water from entering the watch.
The helium escape valve was specially developed for use by professional divers. During deep-sea dives lasting several days, divers operate from diving bells. Prior to surfacing, these bells are filled with a mixture of helium and oxygen. The helium molecules are lighter than air and can therefore penetrate the watch in sufficient quantity to push out the crystal at atmospheric pressure levels. This can be avoided by opening the valve during resurfacing, which allows the helium to escape but prevents water from entering the watch.
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Re: Helium escape valve?
by bodypeersur Sat 14 Aug 2010, 8:39 pm
Or in the case of my Breitling, it opens when sufficien pressure builds up within the case...correct?
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