Birthday of Reg

November 14, 2015

First demand valve ever was invented in the mid 19 century! 

However, modern demand valve appeared almost 100 years later - in 1942 (Cousteau, Gagnan).


read more about first reg ever in our diving knowledge database




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Dahab, South Sinai, Egypt, PO box 63

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Photo Credits: Vladimir Gornostaev, Vladimir Zhilyaev, Viacheslav Ribchinskii