Zeagle Onyx II Octopus Regulator
By Zeagle | Pneumatically Balanced | High-Visibility Yellow Accent & Hose | Cold-Water Anti-Freeze Heat Sink
Provide your dive buddy with reliable, effortless breathing in an out-of-air emergency with the Zeagle Onyx II Octopus Regulator. Engineered with the same high-end pneumatic balancing as the primary Onyx II second stage, this safe second delivers smooth, natural air delivery regardless of depth or cylinder pressure.
Designed specifically for high visibility and harsh diving conditions, the Onyx II Octo features a bright high-visibility yellow purge cover and an extended 36-inch braided yellow hose for easy locating and sharing. Equipped with an integrated heat sink and diver-adjustable pre-dive/dive Venturi lever, it resists icing and prevents unwanted freeflows on stride entries and surface swims.
Pneumatic Balancing & High-Visibility Safety
Unlike standard unbalanced entry-level octos, the Onyx II utilizes an air-balanced downstream valve mechanism to deliver effortless, low-work-of-breathing performance at any depth. Combined with a bright yellow faceplate and a flexible 36" high-visibility yellow hose, it ensures fast identification when seconds count.
Key Performance Features
- Pneumatically Balanced Downstream Valve: Maintains consistent, smooth air delivery regardless of tank pressure fluctuations.
- Diver-Adjustable Venturi Switch: Pre-dive / Dive switch prevents accidental freeflows at the surface while providing full airflow performance when deployed.
- Anodized Aluminum Heat Sink: Dissipates cold generated by expanding air to help prevent internal ice formation in cold waters.
- High-Visibility Yellow Cover & Hose: Bright yellow front cover purge and 36" braided yellow hose make it instantly identifiable in low visibility.
- Lightweight Braided Flex Hose: Standard 36" (91 cm) yellow flex hose provides superior flexibility and minimizes mouth pull.
- Nitrox Compatible: Factory prepped and safe for Enriched Air Nitrox (EAN) mixtures up to 40% O2 out of the box.
Technical Specifications
| Brand / Model | Zeagle / Onyx II Octopus |
| Valve Mechanism | Pneumatically Balanced Downstream Demand Valve |
| User Controls | Pre-Dive / Dive Venturi Freeflow Control Switch |
| Cold Water Tech | Integrated Anti-Freezing Aluminum Heat Sink |
| Hose Type & Length | High-Visibility Braided Flex Hose — 36 inches (91 cm) |
| Gas Compatibility | Air and Nitrox (EAN) up to 40% O2 |
| Primary Applications | Secondary / Safe Second Regulator for Warm & Cold Water Diving |
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