Aqualung Leg3nd Scuba Regulator

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  • Dive in comfort
  • Three anti-freeze features
  • Comfo-Bite mouthpiece
  • Auto Closure Device (ACD)

  • Dive in comfort
  • Three anti-freeze features
  • Comfo-Bite mouthpiece
  • Auto Closure Device (ACD)


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Aqualung Leg3nd Dive Regulator


Aqualung has long been recognized as a leader in the scuba diving equipment market, constantly pushing the boundaries of innovation. The Leg3nd regulator is a testament to the brand's dedication to providing divers with cutting-edge technology and uncompromising quality. By drawing on decades of experience and a deep understanding of the unique challenges faced by divers, Aqualung has engineered a regulator that sets a new standard in the industry.

Exceptional Cold-Water Performance

One of the standout features of the Leg3nd Elite dive regulator is its exceptional cold-water performance. Aqualung has incorporated three anti-freeze properties into this regulator, ensuring that it can handle the most challenging diving conditions. The integrated dry chamber keeps inner components clean and dry by isolating them from the outside environment. Deep ribs create a large heat exchange surface area, helping to prevent ice from forming on the mechanism. The over-molded cap further delays ice formation over the external diaphragm, ensuring that the regulator performs flawlessly even in freezing temperatures.

Breathtaking Breathing Comfort

Breathing comfort is paramount for scuba divers, and the Aqualung Leg3nd regulator excels in this regard. Featuring a pneumatically balanced second stage, the regulator delivers a smooth and effortless airflow, reducing the work of breathing and minimizing jaw fatigue. The Comfobite mouthpiece technology further enhances the user experience, providing a comfortable and secure fit that adapts to the contours of the diver's mouth.

Innovative Design and Engineering

The Aqualung Leg3nd regulator is a masterpiece of design and engineering. The first stage boasts an overbalanced diaphragm design, which, combined with the Auto Closure Device (ACD), safeguards the internal components from water damage and oxidation. The second stage's radial openings and revolutionary front cover design create a sideways flow of water, preventing any unwanted free flows.

Additional Features and Specifications


Auto Balanced: Progressive increase of the working pressure to maintain optimum breathing efforts: Depending on the diver's depth, the working pressure of the first stage is automatically elevated to counteract the increased breathing air density
Auto Closure Device (ACD): When the first stage is not connected to a cylinder valve, (ACD) keeps the inlet shut to protect the first stage internal parts from contamination and corrosive water
Exceptional Cold-Water Performance: The LEG3ND's integrated dry chamber keeps inner components clean and dry by isolating them from the outside environment. Deep ribs create a large heat exchange surface that helps prevent ice forming.
HP/MP Ports: 2 HP ports (7/16”) and 4 MP ports (3/8”), perfectly oriented for optimal hose positioning

New Front Cover Opening Channels: Allow water to flow sideways over the diaphragm. Prevents freeflows when diving in stronger currents. Reduces peak inspiratory flow by 20%.
Overmolded Air Purge:
Wide surface area makes regulator purging easier. Purge depth controller optimizes air flow with minimal effort.
Patented Comfobit Mouthpiece:
Reduces jaw fatigue and secures the second stage more comfortably.
Aqua Flex Hose:
Felxible and lightweight Aqua Flex hose with dual protectors.


Related Underwater Gear Categories:


  • Type of first stage: Overbalanced diaphragm design
  • Auto-Closure Device (ACD): Yes
  • Number of HP ports: 2
  • Number of MP ports: 4
  • 1st Stage Flow Rate: 1500 l/min
  • 1st Stage Weight in DIN: 747 g
  • 1st Stage Weight in Yoke: 957 g
  • Environmental Dry Kit: Permanent
  • First stage exterior: Chrome over marine brass


  • Type of second stage: Pneumatically balanced
  • Controls: Venturi switch
  • Mouthpieces: 2ea. – A Comfo-Bite, installed, and a standard with bite wings in the box
  • Lip shield: Included
  • Heat Exchanger for freezing resistance: Standard on all models
  • 2nd Stage Weight: 227 g
  • Hose length: 730 mm
  • Overall work of breathing (WOB) scores: Avg. 0.70 joules/liter
  • Nitrox compatible: Yes, to 40% O2 when new, out of the box

Weight: 3.50 LBS
Dimensions: 12.00 (in) × 8.00 (in) × 10.00 (in)
Brand: Aqualung

  • 1'st Stage
  • 2'nd Stage Regulators
  • Low Pressure Hose
  • Owner's Manual
  • MFG Limited Lifetime Warranty

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