Abyss gained its notoriety for reliability by setting many diving records, such as deep-solo-dive at -313m and 101 divers breathing simultaneously for 40min from a single MR22 first stage. Firm tradition has evolved thanks to the new engineering and design: more metal, more performance, more reliability. More Abyss.

 

 

The Notified Body INPP of Marseilles performs the strictest tests on regulators to certify they are compliant with the European Regulation EN250, granting the best and safest performance with binary (Heliox) and tertiary (Trimix) mixtures to a depths of 100 meters.

 

Patented technology, conceived and created to optimize performance, safety, and reliability. This brass valve is covered with a hard PU then the head is layered olecularly with a soft PU. Tri-material (brass, soft polyurethane, and "heavy duty" polyurethane) reaches a new level of durability.

 

Metal second stages have superior performance than plastic second stages, especially in cold water, thanks to the high thermal conductivity that limits the freezing effect. Additional benefits are the improved durability, the longer working life and the less dry mouth breathing.

 

DFC system minimizes the intermediate pressure drop during inhalation, making it possible to use a simpler and more reliable second stage. Any type of manual adjustment is not necessary, thanks to the consistency derived from first stages that guarantees a stable flow of air, even under extreme conditions.

 

All Mares second stages offer the unique patented VAD system. The air bypass tube conveys air to the mouthpiece creating a swirling vortex with a low pressure area in center that keeps the diaphragm down during inhalation, for very sensitive and easy breathing at all depths.

 

The patented mesh design of the second stage cover reduces the pressure of water fl owing onto the second stage diaphragm and minimizes free-flow. Even in strong currents it eliminates the need for a knob to ‘de-tune’ your air delivery system to stop free fl owing: Advanced Technology through basic physics.

 

Those who dive frequently and in difficult conditions need products featuring superior quality and consistent performance, time and time again. Mares has always focused on new technologies and innovative products that lead to concrete benefits: superior reliability and performance will be appreciated by the most experienced demanding divers.

 

Designing and engineering products for cold water diving requires maximum attention to performance, safety and technical details. Mares creates equipment specific for cold water and ice diving. Rigorous tests ensure top notch performance keeping you comfortable, warm and secure. Even the US Navy has conceded Mares to be the best equipment for extreme conditions.

 

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The "Tri-material" valve is a Mares patented innovation, conceived and created to optimize performance, safety, and reliability over time for Mares MRT first stages. During operation, the high-pressure valve is subjected to various stresses. In traditional valves, these stresses, combined with extreme usage conditions, can cause premature wear of the valve with a consequent drop in reliability, performance, and safety. After careful study of the forces involved, the pressures that act on the surfaces of the valve, and the usage conditions to which it is subjected, Mares has created the new "Tri-material" valve (brass, soft polyurethane, and "heavy duty" polyurethane), found today on all Mares MRT first stages. This innovative technical solution guarantees maximum performance, safety, and durability for Mares first stages.

 

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. When inhaling, compressed air from the first stage expands inside the second stage and creates an abrupt drop in the temperature of the air, which in cold water can drop to a few degrees above freezing. This situation, along with the natural humidity inside the second stage, can cause ice crystals to form, and when on the demand lever, can result in small air leaks and then trigger free-flow. Metal is a good conductor of heat, and makes the water surrounding the second stage act as a heating element for the air inside and prevents this opportunity for free-flow. 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. Additional benefits of "All Metal" Mares second stages are: • Improved resistance to harsh conditions, rough treatment, and abrasion • Longer working life of the product • Less dry mouth, because the humidity of exhalations condenses on the inner walls of the metal second stage and moisturizes every breath

 

 

DFC

All Mares second stages offer the unique, patented, VAD system (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. This low pressure helps keep the second stage diaphragm down during inhalation, thus increasing the regulator's sensitivity and minimizing respiratory effort. Regulators with the VAD system, offer improved performance and allow for very natural and comfortable breathing. One of the main causes of ice forming in regulators is the expansion of air inside the second stage case, which causes an abrupt drop in temperature. With the VAD system, air expands inside the by-pass tube and mouthpiece, reducing the likelihood of icing.

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