reefrat
Contributor
A valve opened 1.5 turns is going to take less contact to roll-off in an enclosed/overhead environment, I would want to make sure that my O2 valve was not too exposed in such a situation. Of course a roll-off like that should be easily identified and corrected by a diver paying any attention to HUD/handset- but there have been cases!
Also, on my valves 1.5 turns seems to allow a significant flow of gas- so I guess the intent of the 1.5 is to allow a faster closing of the valve in a boom scenario rather than restricting the rate of gas escaping, an issue when the O2 cylinder is only a 19 or even 13 cu/ft.
Also, on my valves 1.5 turns seems to allow a significant flow of gas- so I guess the intent of the 1.5 is to allow a faster closing of the valve in a boom scenario rather than restricting the rate of gas escaping, an issue when the O2 cylinder is only a 19 or even 13 cu/ft.