MK17/S600 SYSTEM
Premium breathing performance in all conditions. Scubapro's ultimate S600 second stage regulator paired with an all-rounder balanced diaphragm MK17 for best breathing, even in harsh environments.

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

S600 Second Stage:
Scubapro's best selling high performance air balanced second stage incorporating numerous patented features. This second stage will optimize your diving experience by virtually eliminating any breathing effort. The 2006 edition features technical improvements for optimal performance and reduced maintenance requirements, thoughtfully implemented by our engineers.

• Air balanced linear flow valve
  Highest performance in any condition.
  Increases safety and relaxation on every dive, beacuse it initiates airflow effortlessly and instantly on demand, independent of the cylinder pressure in a controlled and natural manner
• Precision molded carbon fibre and technopolymer valve housing and components
  Low friction, light weight, corrosion and cold water resistant.
  Exceeds CE cold water norm.
• Diver adjustable inhalation control
  To decrease or increase inhalation efforts for all diving conditions and diver preferences.
• Diver adjustable VIVA
  VIVA in the MAX position is a powerful breathing support. In conditions of cold water, strong current or buddy breathing,
  VIVA should be reduced to avoid free flow
• High flow exhaust valve
  Lowest exhalation effort for best breathing comfort.
• Light weight orthodontically designed mouthpiece
  Comfortable and reduces jaw fatigue and gum irritation.
• Compact design
  Light weight for comfort and travel.
• Big soft purge and oversized controls.