ScubaCat33
Registered
Are there any differences between the Atomic Z1 and Z2 SECOND STAGES?
Atomic Z1 vs. Z2
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PeterNBiddle
Contributor
Of course. The Z2 is more expensive and not discontinued, which makes it much better!
I believe the Z2 has the swivel. All Atomics breathe the same though.
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Z2x has the swivel I believe not the Z2, well certainly in my neck of the woods.
Scared Silly
Contributor
There are cosmetic changes and one slight functional change. The cosmetic changes are the purge cover and exhaust. The functional change is the case which changed the performance of the AFC slightly. Other than that there are no differences.
Hi Scared Silly:
I actually tried a Z1 when Atomic first introduced the regulator. I thought it breathed like crap. Low and behold, I now dive a Z2 and it's been bliss, even at 80 ft with the adjustment knob set to "Maximum" resistance. Apart from the differences that you mentioned, Atomic changed the design of the flow through piston. Would that have any discernable effect on performance or did Atomic Aquatics implement the change to provide a longer service life to the high pressure seat and piston?
O.
I actually tried a Z1 when Atomic first introduced the regulator. I thought it breathed like crap. Low and behold, I now dive a Z2 and it's been bliss, even at 80 ft with the adjustment knob set to "Maximum" resistance. Apart from the differences that you mentioned, Atomic changed the design of the flow through piston. Would that have any discernable effect on performance or did Atomic Aquatics implement the change to provide a longer service life to the high pressure seat and piston?
O.
Scared Silly
Contributor
The piston change was from a sharp edge to a blunt edge which was because of an issue with creep. More of a mechanical change than performance change.
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