Helium escape valve?

View previous topic View next topic Go down

Helium escape valve?

Post by andrema on Fri 07 Jan 2011, 5:12 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.
avatar
andrema
Man About Town

Posts : 1073
Join date : 2010-08-02
Age : 106

Back to top Go down

Re: Helium escape valve?

Post by DMB on Fri 07 Jan 2011, 7:15 pm

NOTE* it's done in a dry environment.
avatar
DMB
New WatchMan

Posts : 14
Join date : 2011-01-07

Back to top Go down

Re: Helium escape valve?

Post by docrwm on Fri 07 Jan 2011, 7:18 pm

DMB wrote:NOTE* it's done in a dry environment.

Isn't it done in a capsule environment - or at least isn't that what it was designed for?

_________________
-Robert
Buy what you like, keep what you love, don't spend too much.
As long as you follow those simple rules - you shouldn't listen to anyone about your watches.
avatar
docrwm
Man About Town

Posts : 1606
Join date : 2010-06-25
Location : Somewhere deep in the South

Back to top Go down

Re: Helium escape valve?

Post by DMB on Sat 08 Jan 2011, 7:58 pm

In a dry decompression chamber. I don't know all the correct terminology, but it is NOT done in the water. (Ex Omega manual valve). An auto valve will release on it's own, but that won't happen until decompression, which is in a dry environment.
avatar
DMB
New WatchMan

Posts : 14
Join date : 2011-01-07

Back to top Go down

Re: Helium escape valve?

Post by docrwm on Sat 08 Jan 2011, 8:01 pm

DMB wrote:In a dry decompression chamber. I don't know all the correct terminology, but it is NOT done in the water. (Ex Omega manual valve). An auto valve will release on it's own, but that won't happen until decompression, which is in a dry environment.

That's what I thought. Its to prevent the watch from popping the crystal, or worse, during the decompression stay in the chamber by professional divers. Thanks.

_________________
-Robert
Buy what you like, keep what you love, don't spend too much.
As long as you follow those simple rules - you shouldn't listen to anyone about your watches.
avatar
docrwm
Man About Town

Posts : 1606
Join date : 2010-06-25
Location : Somewhere deep in the South

Back to top Go down

Re: Helium escape valve?

Post by Sponsored content


Sponsored content


Back to top Go down

View previous topic View next topic Back to top

- Similar topics

 
Permissions in this forum:
You cannot reply to topics in this forum