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Regulator ATOMIC Z2 - octopus

Most manufacturers make two types of octopus - "economical" and "performance". However, even the high-end versions of these backup second stages don't come close to the performance of Atomic Aquatics' "safe seconds".
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Regulator Atomic Z2 Series - Octopus

Why the whole octopus family? 

Each Atomic Aquatics octopus is conceived and built with the same precision as its primary model. So when you need it, you know what to expect. All of our octopuses come standard with an extra-long 36" (92cm) hose. Hoses in custom lengths are available on request.

Cloning can be a good thing

Octopuses from Atomic Aquatics reduce stress in emergency situations. Would you or your buddy like to breathe from a second-rate automatic in an emergency? Our octopuses simply breathe easy with a breathing resistance of 0.56 J/l (according to EN 250) and automatic flow control (AFC). All Atomic basic regulator models are also available as octopuses with a highly visible yellow cover and 36" (92cm) hose.


The key components of the Z2 octopus dispensing mechanism are titanium and 316 grade stainless steel to ensure corrosion resistance. The body of the dosing valve is made of brass and plated with Zirconium, whose hardness far surpasses conventional chrome plating. The total weight is 400g.All Atomic Aquatics Safe Seconds (octopuses) have a service interval of 2 years / 300 dives and are covered by a limited lifetime warranty.

Product Details

Data sheet

Cold water
2nd stage connection
Regulation of inspiratory resistance
Venturi effect limitation
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