Mares Proton Metal Octo, Alternate Air Source

Octopus Proton Metal features a nickel- and chrome-plated brass case which makes this a heavy-duty choice of octopus, even for demanding cold water dives.
Octopus Proton Metal Features
•All Metal Technology - Mares is the only manufacturer in the world to offer a complete range of regulators with the second stage cases produced entirely in metal; anti-corrosion nickel and chrome-plated brass. In cold water, metal second stages have superior performance and are safer than second stages manufactured in plastic materials, thanks to the high thermal conductivity that limits the freezing effect. Strange as it may seem, even at temperatures very close to the freezing point, the water is still warmer than the air expanding inside the second stage.
•Improved resistance to harsh conditions, rough treatment and abrasion
•Less dry mouth, because the humidity of exhalations condenses on the inner walls of the metal second stage and moisturizes every breath.
•VAD - Vortex Assisted Design: This unrivaled system eases breathing at all depths. The working principal is very simple. As air comes from the hose, it passes into the second stage and is conveyed directly to the mouthpiece through the by-pass tube. A "vortex" is created in the airflow as it enters the mouthpiece. In the center of this swirling air is an area of a low-pressure.
•Mesh Grid - The mesh design of the second stage cover reduces the pressure of water flowing onto the second stage diaphragm and minimizes free-flow, even in strong currents (patented).

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Mares Proton Metal Octo, Alternate Air Source

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