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The Apeks XL4 is especially well-suited for the technical exploration diver who prefers cold water climates. Compact and lightweight, it helps reduce jaw fatigue during long, cold dives. Designed with an innovative, over-moulded endcap in conjunction with the environmental diaphragm that helps prevent ice build-up. The XL4 makes an ideal stage regulator and is also an excellent high-performance option for the technical exploration diver who is serious about maximizing functionality and minimizing weight.
- Breakthrough, innovative over-moulded first-stage endcap and environmental diaphragm help 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 1st 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
- Compact machined 1st stage based on the expedition tested Apeks DS4 platform.
- 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 traditional rubber hose
- Standard metallic hose connection for interchangeability
- Comfo-biteTM 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.
- Connections: DIN available
- 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
- Coldwater Use Yes
- Type of second stage: Pneumatically balanced
- Opening Effort Control Knob: Yes
- 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 to 40% O2 when new, out of the box / Can be O2 cleaned to 100%.
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