The C300 second stage features:
The Optimal Flow Design valve (OFD) for reliable and high air flow, improving work of breathing compared to a downstream valve.
Diver-adjustable coaxial VIVA for powerful inhalation assistance and prevention of free-flow.
Diver adjustable inhalation control for personalized breathing effort.
Redesigned mouthpiece tube allows better exhaust airflow.
Available with either 232bar INT or 300bar DIN first stages.
MK25 first stage features include:
Air balanced flow-through piston provides constant and effortless air flow unaffected by changing tank pressure.
2 high and 5 low pressure ports on a swiveling turret.
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