Mon Apr 24, 2017 7:19 pm
It is redundant with a balanced first stage....With that said, balanced 2nd stages usually contain some provision for the diver to adjust the work of breathing while in use if necessary. Non balanced 2nd stages do not have this feature. With a balanced adjustable 2nd stage you can set the regulator to a very low work of breathing and even if it develops a slight freeflow you can quickly eliminate it and not mess up a dive.
Doing it right should include some common sense, not just blindly following specs and instructions. .Gary D, AWAP on SB