Birthday of Reg
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
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
