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10
Helium escape valve
For professional saturation diving that uses helium, when decompressing to surface
pressure in a diver decompression chamber the helium escape valve built into the
watch automatically discharges the helium gas that has seeped into the watch. This
prevents the watch from breaking.
Valve cross section
Inside the watch
↔
outside the watch
When not
discharging
When
discharging
Summary of Contents for Eco-Drive GL117B
Page 1: ...INSTRUCTION MANUAL...
Page 2: ...ENGLISH FRAN AIS ESPA OL DEUTSCH ITALIANO PORTUGU S...
Page 44: ......