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MR 12 First Stage MR 12 diaphragm first stage featuring the DFC (Dinamic Flow Control) system and a replaceable HP seat connector. Compact body, in a modern and smart style, it is made of hot-forged nickel-plated and chromed brass. It is fitted with a preferential intermediate pressure port for connection to the main second stage, plus 3 other LP ports and 2 HP ports. The latter are inclined at a 45º angle to allow a more rational layout of hoses. proton second stage Top-level performance for one of the most compact second stages on the market. Proton XL is a technological powerhouse. Integrated VAD system for effortless natural breathing. Two-component second stage body construction, which offers exceptionally light weight, (just 182 grams) as well as a unique look and superior resistance to abrasion. Anodized aluminum inserts enhance the front coverplate, incorporating the "mesh-grid" system. The exhaust valve can be easily inspected or replaced through a special opening in the exhaust ports. The first stage hose is of the "super soft" type for maximum diver comfort. The brand new mouthpiece has been designed to ensure a secure grip with minimal jaw fatigue.
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