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FEATURES First 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.With 2 HP ports and 4MP ports. Second Stage Compact and lightweight second stage improves comfort and helps reduce jaw fatigue on long duration dives.Large heat exhanger to improve cold water preformance and freezing resistance. 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.UV inhibitors to help prevent discolouration of the white materials. SPECS Connections Yoke and DIN available Type of first stage Over-balanced diaphragm design, environmentally sealed Body Type One piece machined body Number of HP ports 2 (7/16" UNF) Number of MP ports 4 (3/8" UNF) Weight DIN – 905g (2 lb) Yoke – 1041g (2.3 lb) Environmental Dry Kit Standard First stage exterior Satin 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
