Aqualung Helix Pro DIN Octopus

The Aqualung Helix Pro DIN 300 bar regulator set, including the Helix Pro octopus, represents a mid-range diving regulator system engineered for reliable underwater breathing performance. This balanced first and second stage regulator combination delivers consistent airflow across varying depths and tank pressures. The first stage features Aqualung's Auto Closure Device technology that automatically seals the high-pressure inlet when the valve core is removed, preventing corrosive water intrusion even when the regulator is depressurized. The balanced diaphragm first stage provides stable intermediate pressure output while the T-shaped housing design allows for streamlined hose routing. A permanent dry chamber protects internal components from water damage and contaminants, enhancing long-term durability.

The second stage incorporates heat exchangers to help prevent freezing in cold water conditions and an in-line ergonomic Venturi adjustment knob for precise airflow control, even when wearing gloves. The Comfo-Bite mouthpiece reduces jaw fatigue during extended dives while the cover opening channels allow lateral water flow across the diaphragm, minimizing free-flow in strong currents and reducing breathing effort. The included Helix Pro octopus secondary regulator maintains the same performance characteristics as the primary second stage, providing a reliable backup air source.

Constructed from durable plastic materials in a black finish, this regulator set meets DIN 300 bar connection standards suitable for international diving applications. The balanced design ensures smooth breathing characteristics while the comprehensive protection systems contribute to extended service life and maintenance intervals. This equipment combination offers practical functionality for recreational divers seeking reliable performance across various diving conditions without compromising on essential safety features.