MK11 EVO First Stage
• Newmetal fins on the forged brass body improve thermal exchange on this air-balanced diaphragm design, equipping this first stage to handle all diving conditions, including extreme cold water.
• Redesigned bumpers prevent scratching.
• Two new high-pressure ports are set on a 15-degree angle for convenient hose routing.
• Four new high-flow low pressure ports increase airflow while maximizing hose routing options.
• Innovative double spring layout increases performance while contributing to overall compactness.
• External intermediate pressure adjustment enables
technicians to fine-tune performance quickly and easily
• CE certified to EN250A European Standards for all diving conditions, including extreme cold water.
• Weight (oz/g): INT 232, 26.3/746; DIN 300, 18.6/528.
• Airflow at 2900psi/200bar: (l/min/SCFM): 5200/184.
• Intermediate pressure (3336 psi/ 230 bar):
133 – 142/9.2 – 9.8.

C370 Second Stage
• Air-balanced valve smooths out the inhalation effort at varying depths and supply pressures.
• Compact, rugged fiberglass-reinforced nylon casing
takes up little space in a dive bag.
• Stainless steel frame on the front cover adds the
SCUBAPRO C-Series signature.
• Exhaust tee contributes to better work of breathing.
• User controls include a diver-adjustable inhalation effort knob and coaxial dive/pre-dive lever.
• Large purge button is easy to activate, even wearing
thick gloves.
• Super-flow hose features an oversized bore that allows more air to flow on each inhalation.
• Compact Hi-Flow mouthpiece improves airflow as well as mouth comfort, fitting all mouth sizes, from smallest to largest.
• Weight: 6oz/171g.
• Airflow at 2900psi/200bar: (l/min/SCFM): 1600/57.