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The CORE regulator’s amazing breathing, which is rated as “superior” on the ANSTI breathing machine, coupled with its generous features, at an attractive mid-range price, provides the best value of any regulator offered today. The CORE comes standard with Aqua Lung’s unique, patented, auto-closure device (ACD) which seals water out.

  • Auto Closure Device (ACD) - keeps corrosive water out of the first stage inlet by automatically closing as the CORE is removed from the cylinder valve
    • This prevents internal lubrication from washing away
    • Safer for elevated percentages of oxygen
  • The balanced diaphragm first stage provides superior, consistent performance
  • The pneumatically-balanced second stage results in smooth, easy breathing
  • Available in yoke (3300 psi / 232 bar max) or din (4350 psi / 300 bar max)
  • The T-shape of the first stage optimizes the location of the 4 MP ports and 2 HP ports
  • Uses parts that are common to other Aqua Lung models for easier servicing
  • The easy-to-grip venturi lever prevents unwanted freeflow at the surface while giving a performance boost at depth
  • A heat exchanger (patented) which surrounds the valve mechanism, dissipates the cold caused by gas expansion while drawing in the warmth of the ambient water
  • Compatible with EAN 40 new, out of the box
  • Equipped with Aqua Lung’s patented Comfo-bite™ mouthpiece along with a reusable mouthpiece clamp
  • The Supreme cold water version is resistant to freezing when diving in waters colder than 50°F / 10°C
  • The Supreme version is equipped with an environmental dry chamber on the first stage and a lip shield on the second stage.
Number of models: 4 models: CORE yoke, CORE din, CORE Supreme yoke, CORE Supreme DIN
Type of first stage: Balanced diaphragm design
Auto-Closure Device (ACD): Yes
Number of HP ports: 2
Number of MP ports: 4
1st Stage Flow Rate: 1450 l/min
1st Stage Weight in DIN: 510 g
1st Stage Weight in Yoke: 700 g
Environmental Dry Kit: On Supreme model only
First stage exterior: Chrome over marine brass
Type of second stage: Pneumatically balanced
Controls: Venturi switch
Breathing resistance: Preset
Mouthpieces: 2ea. – A Comfobite, installed, and a standard with bite wings in the box
Lip shield: On Supreme models only
Heat Exchanger for freezing resistance: Standard on all models
2nd Stage Weight: 175 g
2nd Stage Weight – Supreme model: 178 g
Hose length: 730 mm
Overall work of breathing (WOB) scores: Avg. 0.80 joules/liter
Nitrox compatible: Yes to 40% O2 when new, out of the box


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