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Atomic Aquatics

Atomic Aquatics ST1 Regulator



Item code: 309582

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  • DIN 03-0060-7P €994.33

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  • A-Clamp 03-0060-6P €994.33

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Atomic Aquatics

Atomic Aquatics ST1 Regulator


Manufacturers Description


The Atomic ST1 Regulator is a high quality beautifully crafted regulator that delivers outstanding performance and looks great. The 5 ported swivel turret 1st stage is machined from a unique 316 stainless steel, unlike conventional brass 1st stages, which performs better and is kinder to the environment.


Swivel Turret

The 1st stage has 5 Low Pressure ports on a swiveling turret which allow the hoses to rotate around the first stage with the 5th port facing upwards. This gives added flexibility in hose routing prefered by many sidemount divers.

The 2nd stage also features a swivel ball joint on the hose that reduces jaw fatigue as the hose can route in at a greater degree instead of just 90°.


Titanium Parts

The internal mechanism of the 2nd stage uses the same Titanium parts as the T2 and B2 models which is stronger, lighter and has a greater corrosion resistance compared to brass or stainless steel parts.


The 2nd stage also features a Seat Saving Orifice that takes the pressure off the seal enhancing the lifetime and performance of the regulator. Inside the 2nd stage is a soft seal and an orifice pushed against it behind a spring which only opens when you draw a breathe. When disconnected from your cylinder the SSO pulls the orifice back relieving the pressure against the seat. As soon as the regulator is pressurised or submerged the spring reactivates to seal the 2nd stage.


Automatic Flow Control

The ST1 2nd stage features Atomic's AFC system that automatically interrupts freeflows before they occur by using a flexible venturi system that redirects freeflowing gas back into the 2nd stage to equalise the pressure.



Prescription Lenses



1st stage:

  • First stage machined from solid 316 Stainless Steel
  • Atomic Jet Seat high-flow piston first stage
  • Freeze protected factory-sealed first stage also prevents contamination such as silt and sand
  • Nitrox ready for mixtures up to 40%
  • First stage ports: 2 HP fixed / 5 LP on swivel cap


2nd stage:

  • All-Titanium second stage construction same as Atomic T2 and B2 models
  • Patented Atomic Seat Saving Orifice (Titanium)
  • Patented Atomic Automatic Flow Control (AFC)
  • Rapid adjustment knob for manual second stage de-tuning in special situations
  • All-stainless steel Atomic Comfort Swivel standard
  • A new high-flow second stage case lowers breathing effort at any depth from shallow water to beyond the limits
  • Dual material second stage cover enables entire front to be used for purge
  • Dual silicone comfort fit mouthpiece with tear-resistant bite tabs
  • 2 year / 300 dive service interval
  • Limited Lifetime Warranty - not contingent on proof of service
  • Wide exhaust deflector to disperse bubbles for enhanced visibility
View product manual
1st Stage Balanced
1st Stage LP Ports 5
1st stage HP Ports 2
2nd Stage Traditional
Adjustable Inhalation Yes
Adjustable Venturi Automatic
Cold Water Rated Cold & Warm Water
Dive Type Scuba
Environmentally Sealed Yes
Service Info 2 Years - 300 Dives
Weight 1,143 g

Product ratings

18 April 2009

Was a little dubious about the price at first but, i have to say that you are certainly getting what you pay for here! Like an angel tickling your tongue. A well made,lightweight,easy to use bit of kit.The comfort swivel is a nice touch and the ease

8 November 2010

Mine has just arrived, 3 days delivery to Sweden, Excellent. The reg itself is a work of art, fantastically made, if it breathes half as well as it is put together I will be a very happy bunny.

1 January 2016

These superbly built regulators deliver in spades (and then some). Beautifully crafted, these regs are a joy to dive. I've used lots of regs but they don't come anywhere Atomic and they are superb in cold water too. Well worth the investment.

5 March 2018

You get exactly what you pay for, the performance of a Ferrari with the comfort of Rolls Royce, if you can afford the outlay you will not be dissapointed