Check the listing for details. Atomic Aquatics Z2 2nd Stage Regulator - Gray. Condition: New. Listed at 319.95 USD. Z2 Zirconium OctoTHE ECONOMY OF ZIRCONIUM. THE ELEGANCE OF ATOMIC.At Atomic Aquatics, they place the same priority on performance and emphasis on engineering for every product. They design our Safe Seconds to perform at the highest level for every budget level. Atomic engineers developed a unique Zirconium over Chrome over Brass plating process to deliver corrosion-resistance 3-4 times that of conventional chrome plating. The Z Series second stage lever, orifice and spring are Titanium, delivering natural easy breathing – the signature of all Atomic Regulators.Cloning Can Be A Good Thing An Atomic octopus reduces stress in emergency situations. In an emergency, why would you or your buddy breathe from an inferior regulator? An octopus should breathe easy. All Atomic second stage primary models are available as dedicated safe seconds with high visibility yellow covers and an extra-long 36" hose.Z2 Octo The Z2 safe second stage features critical metal components of the demand valve are made of Titanium or 316 Stainless Steel and completely corrosion proof. The demand valve housing is machined of brass and plated with an exotic Zirconium plating that exponentially outlasts conventional chrome plating.Atomic Z2 2nd StageSecond Stage:Second stage components are made of precision machined Brass with Zirconium plating and TitaniumZ2x has a Brass Atomic Comfort SwivelPatented Atomic Seat Saving Orifice (Titanium)Patented Atomic Automatic Flow Control (AFC)Rapid adjustment knob for manual second stage de-tuning in special situationsA new high-flow second stage case that significantly lowers breathing effort at any depth from shallow water to beyond the limitsDual material second stage cover enables entire front to be used for purgeDual silicone comfort fit mouthpiece with tear-resistant bite tabs2 year/300 dive service intervalLimited Lifetime Warranty