johntt1986
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Any real reason to use independent over Isolated, not looking at the cost for either.?
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String:Some cave divers prefer independent citing issues like reduced snag hazard etc. In theory as theyre 2 totally separate systems something like a manifold failiure cannot possibly lose all your gas (that said a failiure on independent means you will lose half your gas).
String:Not really, if you breathe say 20 bar at a time from each tank to keep them at roughly the same level (which youre supposed to do) then at the end of the dive each tank should be within 20 bar of the other in pressure so there shouldnt be a "fuller" tank. If you arent doing that you've already lost your redundancy plan.
Manifold 12s should give you enough gas for 2 recreational style dives. Independent 12s give you an identical amount of gas.
String:Not really, if you breathe say 20 bar at a time from each tank to keep them at roughly the same level (which youre supposed to do) then at the end of the dive each tank should be within 20 bar of the other in pressure so there shouldnt be a "fuller" tank. If you arent doing that you've already lost your redundancy plan.
Manifold 12s should give you enough gas for 2 recreational style dives. Independent 12s give you an identical amount of gas.
nadwidny:Not quite. On independent doubles if one has a failure they lose half of their remaining gas. Huge difference. As well any failure (1st stage, 2nd stage, post) in an independent system means loss of that half.