Features:
2nd Stage
- Compact and lightweight second stage improves comfort and helps reduce jaw fatigue on long duration dives.
- High performance pneumatically balanced lever operated poppet valve.
- Large, over moulded self-flushing and controllable purge button.
- Ergonomic Venturi lever is easy to use and locate.
- Flexible nylon braided hose has better cold water performance than a traditional rubber hose.
- Standard metallic hose connection for interchangeability.
- Comfo-bite mouthpiece has a unique bridge that fits across the upper palate and does not require bite pressure to stay in place.
- Re-useable mouthpiece clip makes it simple to change mouthpieces in the field.
- Durable and flexible rubber exhaust tee provides excellent bubble diversion.
1st Stage
- Compact machined first stage based on the expedition tested Apeks DS4 platform.
- Break through, innovative over-moulded first-stage endcap and environmental diaphragm helps prevent ice build-up that can cause first stage free flow in extreme circumstances. Also protects the first stage from impact damage.
- Large surface area heat exchanger diaphragm clamp helps increase the gas temperature inside the first stage, resulting in improved cold water performance.
- Unique over-balanced diaphragm design – as the diver descends, the over-balancing feature allows the medium pressure gas in the hose to increase at a faster rate than ambient. This results in superior performance at depth.
First Stage specifications:
- Connections: DIN GAS 5/8
- Type of first stage: Over-balanced diaphragm design, environmentally sealed
- Body Type: One piece forged body
- Number of HP ports: 1 (7/16" UNF)
- Number of MP ports :4 (3/8" UNF)
- Environmental Dry Kit Standard
- First stage exterior Satin
- Orientation Convertible LH or RH
- Nitrox compatible: Yes, up to 40% Oxygen
Second Stage specifications:
- Cold water Use: Yes
- Type of second stage: Pneumatically balanced
- Opening Effort Control Knob: No
- Integrated Venturi Lever: Yes
- Mouthpiece: Comfo-bite™
- Exhaust tee: Standard, one set
- Heat Exchanger for freezing resistance: Yes
- Hose type: Braided Flexi-hose
- Overall work of breathing (WOB) scores: Avg. 0.90 joules/liter
- Nitrox compatible: Yes up to 40% Oxyge
NOTE: Apeks has slightly changed the design of the second stage, adding a new logo on top. The images shown may not exactly match the new 2023 model, but not its dimensions, color and features, which remain the same.
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