Description: The Mares 42 Metal regulator is Mares' lightest and most compact metal regulator. The high performance Mares MR42T first stage, is combined with an all metal second stage, for minimum weight and size.
Super-Compact First Stage
All Metal 2nd Stage
Minimum Breathing Effort
New tri-material valve withsuperior durability
Equipped with the revolutionary new tri-material valve
HP and LP ports arranged for optimum hose placement
Light and compact Proton Metal second stage
VAD system provides natural breathing
Easy to use oversized purge button
Features
Tri-Material Valve
VAD (Vortex Assisted Design) Technology
All Metal Technology
DFC (Dynamic Flow Control)
CDW (Cold Water Diving) Dry Kit
Mesh-Grid Second Stage Diaphragm Cover
Tri-Material Valve
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.
VAD
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.
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.
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.
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