First Stage

• Auto Closure Device (ACD): Keeps the inlet closed when not connected to a cylinder valve to protect internal parts from debris and corrosive water, maintain oxygen compatibility, preserve internal lubrication, and keep the inlet filter clean and dry.
• Permanent Dry Chamber: Isolates internal parts from the outside environment to keep them clean and dry, improving freeze resistance in cold-water diving.
• De-ice and Heat Exchange: Deep ribs increase heat-exchange surface area to help prevent ice formation; overmolded cap delays ice on the external diaphragm.
• Over-Balanced Mechanism (Auto-Balanced): Overcompensates interstage pressure to reduce breathing effort across depths and tank pressures.
• Balanced Diaphragm: Provides consistent, superior performance.
• Blue High Pressure Seat: Durable HP seat that forms a reliable seal and compensates working pressure to address increased breathing air density.
• Dust Cap Protection: Attached cap protects the inlet fitting and ACD from impacts and seals the first stage when off the tank.
• Ergonomic DIN and Yoke Screws: Bi-material soft-grip screws for easier installation and removal, even with cold hands; channeled yoke screw prevents water retention.
• HP/MP Ports: 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: Wide radial openings allow water to flow sideways over the diaphragm to reduce cracking effort and help prevent freeflows in strong currents.
• Air Channel Deflector: Streamlined bi-material component that directs airflow evenly and reduces exhalation effort.
• Venturi Adjustment Switch: Adjustable between “MIN” and “MAX” to control valve assistance and inhalation effort; overmolded lever for gloved operation.
• Cracking Effort Adjustment: Fine-tunes breathing performance for different diving conditions.
• Pneumatically Balanced: Ensures smooth, easy breathing at all depths.
• Heat Exchanger: Helps prevent ice formation on the valve inlet.
• Overmolded Air Purge and Exhaust Cover: Large purge area for easy clearing; elastomer exhaust cover provides protection and soft-touch feel.
• ComfoBite Mouthpiece: Patented palate-bridge design reduces jaw fatigue and secures the second stage; made from hypoallergenic silicone.
• Interchangeable, Reusable Mouthpiece Clip: Tool-free mouthpiece changes to reduce plastic waste.

Hose and Finish: Flexible, lightweight Aqua Flex hose with dual protectors. Selected stainless-steel parts feature a durable black Titadur® multi-layer coating; polymer parts are overmolded in black and anthracite tones.