Atomic Aquatics ST1 Regulator

  • Sale
  • $1,569.00
  • Regular price $1,749.00
Tax included.


Beautifully machined. Beautiful performance. And it keeps the oceans beautiful, too. As the first “Green” regulator ever designed, the ST1 is made of a special grade of 316 Stainless Steel that is 100% recyclable. The ST1 offers superior corrosion-resistance and does not require Chrome or Nickel-plating processes that create environmental concerns.

All this Stainless Steel durability weighs just 2.3 pounds (yoke version), making the ST1 an excellent travel companion.

ST1 First Stage

  • Beautifully machined from a special Atomic grade solid 316 SS.
  • Atomic exclusive balanced Jet Seat high-flow piston.
  • Freeze-protected and factory-sealed to prevent outside contamination from silt and sand.
  • Nitrox ready – approved for non-dedicated EAN use with mixtures up to 40%.
  • Ports: 2 HP fixed / 5 LP on swivel cap

ST1 Second Stage

  • Pneumatically-balanced poppet, high-flow case and lever design for easy breathing at all depths and tank pressures.
  • Patented Atomic AFC – Automatic Flow Control.
  • Soft overmolded Rapid Adjustment Knob for manual detuning in special situations such as surf entries or octo use.
  • Patented Atomic Titanium Seat Saving Dynamic Orifice maintains crisp like-new factory tuning and prevents damage during storage.
  • Hose features patented Stainless Steel Atomic Comfort Swivel with Black PVD coating.
  • Dual material second stage cover enables entire front to be used for purge.
  • Elliptical exhaust valve dramatically reduces exhalation effort at depth.
  • Dual silicone comfort fit mouthpiece with tear-resistant bite tabs – both comfortable and durable.
  • Optional ST1 color kit lets you express your style.