MK17/C300 SYSTEM
Scubapro MK17/C300 regulator combines the new OFD technology with the sturdiness of our balanced diaphragm first stage. A high-end regulator while remaining a midrange system.

Diving conditions can be drastically different, including extreme cold water and outside temperatures, posing the possibility of a regulator “freezing”. Therefore, resistance to freezing is imperative for the diver. All Scubapro regulator systems are CE approved for 4300psi cold water diving. Some models go even beyond this super stringent qualification and have successfully been tested in extreme cold diving conditions at less than 36°F. As a specific anti-freezing measure, Scubapro engineers have designed a patented finned cap for both the MK17, MK19 and the MK25 first stages for optimal cold water diving. The ribs act as a radiator to increase the surface area of heat transfer from the water to warm up the internal parts that have been drastically cooled down by the gas pressure drop. On the MK17, a dry ambient pressure chamber enhances the resistance to real ice cold water at any depth compared to other dry chamber diaphragm first stages. For cold water diving, Scubapro’s second stages feature precision molded carbon fiber and technopolymer valve housing and components. They even exceed the CE cold water norm. In addition, these components contribute to their lightweight features and corrosion resistance.

First stage MK17:

• Balanced technology
  Provides consistent performance at all tank pressures, at any depth, and optimizes the second stage performance, for effortless breathing.
• Externally adjustable intermediate pressure
  Allows authorized Scubapro service technicians to quickly fine tune or make adjustments after maintenance without the need to disassemble the first stage.
• Dry ambient pressure chamber
  Provides better protection and performance in cold water.
• Polished chrome edition
  Available exclusively with the A700 second stage.
• Unparalleled breathing performance
  For the A700 at virtually any depth, temperature, and diving position.
• Work of breathing results are below 0.49 J/L
• Full metal body 
  Components assure the best thermal exchange.
• Compact dimensions for lightweight comfort
• Two opposite high pressure ports
  The arrangement of high and low pressure hoses is crucial to diving comfort. Two opposite high pressure ports allow for an individual positioning of the first stage (pointing up or down). This allows the diver to position the gauges either on the right or left side and increases the freedom of movement for head and neck.
• Two High Flow low pressure ports
  The MK17 feature four stationary low pressure ports, two of them High Flow.  High flow ports deliver about 15% more air than conventional ports.
• DIN/INT first stage configurations
  To ensure worldwide compatibility, all Scubapro regulator systems are available in a 200bar INT version as well as 300bar DIN versions.
• CE Approved

C300 Second Stage:
Scubapro's compact C300 Systems offer uncompromising breathing performance for avid recreational divers. The C300 second stage is lightweight with anti-scratch cover. It allows all the adjustment options of a high-end regulator while remaining a midrange system.

• 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. 
• Precision molded carbon fibre and technopolymer valve housing and components
  Low friction, light weight, corrosion and cold water resistant.
• Light weight orthodontically designed mouthpiece
  Comfortable and reduces jaw fatigue and gum irritation.
• Compact design
  Light weight for comfort and travel.
• Available
  With either 232bar INT or 300bar DIN first stages.
• CE-Approved