Helium Valve

A helium valve or helium valve is a feature found on some dive watches .

It makes it possible to evacuate the helium atoms which could have infiltrated the inside of the case of the watch during certain very prolonged dives, the dives called “saturation” where the divers breathe a gas mixture of Helium and Oxygen, Thus avoiding some of the detrimental effects of nitrogen at high pressure and allowing them to remain for several days inside a bell or submarine station.

However, during the ascent, the decompression of the divers can take place faster than the degassing of the helium contained in the watch, which causes an overpressure in the casing, which can cause damage.

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