Description

Aqualung LEG3ND MBS DIN 300 Bar Regulator With Octo

Aqualung LEG3ND MBS DIN 300 Bar Regulator with Octo is a cutting-edge regulator system that combines advanced breathing technology with ergonomic design to provide divers with unmatched control and comfort. Featuring Aqua Lung’s Master Breathing System (MBS), this regulator allows simultaneous adjustment of the Venturi effect and inhalation effort in a single, intuitive rotation, adapting seamlessly to all depths, conditions, and dives.

The first stage incorporates the Auto Closure Device (ACD), which automatically keeps the inlet closed when disconnected from the cylinder valve, protecting internal components from contamination and corrosive water. This design preserves internal lubrication, keeps the inlet filter clean and dry, and improves safety when using elevated oxygen percentages.

Cold-water performance is enhanced through three anti-freeze innovations: an integrated dry chamber isolates internal components from moisture, deep ribs increase heat exchange to delay ice formation (+30% vs Glacia / +70% vs Legend 2), and an overmolded cap slows ice buildup on the external diaphragm. The first stage is auto-balanced (over-balanced), progressively increasing working pressure with depth to maintain optimal breathing effort.

Ergonomic improvements include Soft Grip bi-material DIN and YOKE screws for better handling, even with cold hands, a channeled YOKE screw to prevent water retention, and a specialized ACD dust cap that protects the inlet fitting and ACD system from impact. High Pressure (HP) and Medium Pressure (MP) ports are positioned for optimal hose routing.

The second stage enhances airflow and breathing comfort. Front cover channels allow water to flow sideways over the diaphragm, while radial openings reduce freeflow in strong currents. Widened openings reduce peak inspiratory flow by 20%, and a new overmolded exhaust cover with soft-touch elastomer improves purging.

The overmolded air purge with a wide surface area, combined with a purge depth controller, makes clearing water easy with minimal effort. Comfort is maximized with the patented Comfobite mouthpiece, which reduces jaw fatigue, and a detachable, reusable mouthpiece clamp allows quick, tool-free changes without generating plastic waste.

The enlarged heat exchanger protects against freezing in cold water, and an air channel deflector evenly distributes airflow during inhalation while the streamlined bi-material deflector reduces exhalation effort. The Aqualung LEG3ND MBS DIN 300 Bar Regulator system is completed with a flexible and lightweight Aqua Flex hose with dual protectors.

FEATURES

• Master Breathing System (MBS) allows combined Venturi and inhalation effort adjustment
• Auto Closure Device (ACD) protects first-stage internal components
• Integrated dry chamber and heat-exchange ribs for superior cold-water performance
• Overmolded cap to delay ice formation on diaphragm
• Auto-balanced (over-balanced) first stage for consistent breathing at depth
• Soft Grip DIN and YOKE screws for ergonomic handling
• Channeled YOKE screw and specialized dust cap for protection
• Optimally positioned HP and MP ports for clean hose routing
• Second stage front cover channels and radial openings prevent freeflow
• Widened openings reduce peak inspiratory flow by 20%
• Overmolded exhaust cover and air purge with purge depth controller
• Patented Comfobite mouthpiece to reduce jaw fatigue
• Detachable, reusable mouthpiece clamp
• Enlarged heat exchanger to prevent freezing
• Air channel deflector and streamlined deflector reduce exhalation effort
• Flexible Aqua Flex hose with dual protectors

SPECIFICATIONS

• Brand: Aqualung
• Model: LEG3ND MBS
• Connection Type: DIN
• Maximum Pressure: 300 bar
• First Stage Type: Auto-balanced (over-balanced)
• Environmental Sealing: Integrated dry chamber
• Hose Type: Aqua Flex
• Mouthpiece: Comfobite
• Regulator System: First and second stage with octopus