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How to use the helium escape valve (fig. 2)
In its normal position (fig. 2.1), the OMEGA helium escape
valve is perfectly watertight thanks to gasket (B), but it is
not functional, since it is screwed in
.
During the decompression phase, unscrew the crown of the
valve in order to release the mechanism (fig. 2.2). The valve
is now watertight from the outside. As the interior pressure
becomes greater than the exterior pressure, it pushes the
gasket A out of its seating, thus releasing the gas (fig. 2.3).
Once the pressure is equalised, gasket A returns to its origi-
nal position, pushed by the spring C (fig. 2.2).
This operation is automatically repeated several times
during the decompression phase. Once atmospheric pres-
sure is reached, screw in the crown of the valve (fig.
2.1).
Note:
Even if the valve is unscrewed, the watch is still water resis-
tant to 50 metres. However, complete water resistance is
guaranteed by gasket (B) when the valve is screwed in.
Helium escape valve
B
A
C
fig. 2.2
fig. 2.3
fig. 2.1
fig. 2