Aqualung Pack Leg3nd + Octo

First Stage

• AUTO CLOSURE DEVICE (ACD) – Keeps the inlet closed to protect internal components from debris and corrosive water when not connected to a cylinder valve. Maintains oxygen compatibility, preserves internal lubrication, and keeps the inlet filter clean and dry, extending service life.

• PERMANENT DRY CHAMBER – With no moisture, there is no ice. The Permanent Dry Chamber isolates internal components from the external environment, keeping them clean and dry and increasing freeze resistance in cold water.

• DE-ICE – Deep ribs create a large heat exchange surface to help prevent ice formation on the mechanism. The overmolded cap delays ice buildup on the external diaphragm.

• OVER-BALANCED MECHANISM (Auto-Balanced) – Overcompensates interstage pressure to reduce breathing effort. Provides effortless breathing regardless of depth or tank pressure, from start to finish of the dive.

• BALANCED DIAPHRAGM – Ensures superior and consistent performance.

• BLUE HIGH PRESSURE SEAT – The core of the first stage. Opens and closes with every breath, forming a perfect seal with durable materials suitable for all conditions and gases. Automatically increases working pressure to counter increased breathing gas density.

• DUST CAP PROTECTION – Attached to the regulator body, protects the inlet fitting and ACD from impacts and damage, and seals the first stage when off the tank.

• DIN AND YOKE SCREWS – Ergonomically shaped bi-material screws with Soft Grip surface for better handling when installing or removing the first stage, even with cold hands.

• CHANNELED YOKE SCREW – Prevents water retention.

• HP / MP PORTS – Perfectly positioned for optimal hose routing.

• AVAILABILITY – DIN (4,350 psi / 300 bar max.) and YOKE (3,300 psi / 232 bar max.).

Second Stage

• COVER OPENING CHANNELS – Allow water to flow sideways over the diaphragm. Wide radial openings prevent freeflows in strong currents and reduce cracking effort by 20%.

• AIR CHANNEL DEFLECTOR – Streamlined bi-material component evenly directs airflow through the second stage and reduces exhalation effort.

• VENTURI ADJUSTMENT SWITCH – Allows precise airflow control. In “MIN” position, valve assistance is reduced to avoid freeflow; in “MAX”, assistance is maximized for lower inhalation effort. Ergonomic elastomer lever is easy to use even with gloves.

• CRACKING EFFORT ADJUSTMENT – Enables fine tuning of breathing performance according to diving conditions.

• PNEUMATICALLY BALANCED – Ensures smooth and easy breathing at all depths.

• HEAT EXCHANGER – Prevents ice formation at the valve inlet.

• OVERMOLDED AIR PURGE – Large purge area makes clearing the regulator easy and controlled.

• OVERMOLDED EXHAUST COVER – Soft-touch elastomer cover provides added protection.

• BLACK COATING – Durable stainless-steel parts feature a black Titadur® multi-layer coating for superior durability. Polymer parts are overmolded in black and anthracite tones for an exclusive look.

• COMFOBITE MOUTHPIECE – Patented, comfortable mouthpiece with a unique palate bridge that reduces jaw fatigue and keeps the second stage securely in place. Made from hypoallergenic silicone.

• INTERCHANGEABLE MOUTHPIECE – Detachable, reusable mouthpiece clamp allows quick, tool-free replacement, reducing plastic waste.

• REUSABLE MOUTHPIECE CLIP – Enables fast and easy mouthpiece changes.

• AQUA FLEX HOSE – Lightweight, flexible hose with dual protectors.