Quote: (Originally Posted by
Drmike)

I like to keep the 2 systems seperate OC and Rebreather. Blow a hose or o-ring with a linked system on a deep dive and you could lose much of your O2 supplies.
Hi Mike, I think I understand the above principle, but I wonder if it applies to the sytem I'm using-onboard 1st stage as a manifold. Because I haven't dived in months and am generally forgetful, I forgot to mention that the on-board dil whip has a ball valve shut off and that both the on and off-board reg valves are left open, obviously, to keep the ambient pressure from collapsing the lp hoses on descent. So if I had an HP seat failure on either the on or off-board reg, there would be no catastrophic gas loss of both supplies as long as the ball valve was closed, right?
And obviously if you have off-board O2 plugged into your on-board O2 reg with the same QC whip system, the same would be true if you have a ball valve btw the 2 lp hoses closed, right?