OP
SouthernSharktoothDiver
Contributor
@grantmac I'm scratching my head why I would cut off a tank in the event of gas failures in independent doubles. Sure, it might be nice to keep water from getting into the tank, but in the unlikely event of gas failure behind the reg, either my valve, tank neck, or regulator first stage is busted, and all three of those necessitate a trip to the dive shop for repairs in any case. Simple enough to get the tank/reg dried and cleaned if necessary while I'm there, and while that does cost an extra $30 (assuming worst case and I need a tank tumbled and o2 cleaned), that is a risk I'm quite willing to take.