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Description  more details

ScubaPro MK25/S600 Deep Blue Balanced Regulator

Ease of breathing is the essence of this reg system and it looks good too.

The high performance MK25/S600 reg system is known for its low work of breathing and tremendous reserve capacity. Year after year, in successive independent tests, it has consistently ranked as one of the top-performing regs on the market. SCUBAPRO has taken this winning combination and added a durable jewel-colored DEEP BLUE PVD (Physical Vapor Deposition) finish on both first and second stages. This protective coating not only looks great, it also provides superior scratch and corrosion resistance.

The air balanced piston designed MK25 first stage produces a reliable, low-effort delivery of air, no matter how hard you're breathing or how deep you're diving. It features a convenient swivel turret with five high-flow LP ports (high flow ports deliver about 15 percent more air than conventional LP ports). It also has an external intermediate pressure adjustment that allows technicians to maintain peak performance without the need for disassembly.

The air balanced S600 second stage features an interior titanium barrel for lightweight performance and additional corrosion resistance. The S600 delivers effortless inhalation and exhalation. It's easy to use too, with efficient user controls that include a powerful purge, an inhalation effort control knob and Venturi Initiated Vacuum Assist (VIVA) dive/pre-dive switch.

Synonymous with SCUBAPRO quality and unbeatable engineering, the MK25/S600 DEEP BUE is the preferred combo of professionals. In all water temperatures, in the most demanding dive conditions, this reg performs flawlessly, and it looks great doing it.


  • Jewel colored Deep Blue PVD exterior finish provides superior scratch and corrosion resistance
  • Air-balanced flow-through piston design delivers constant and effortless airflow unaffected by depth, tank pressure, or breathing rate
  • Two high pressure and five high-flow low pressure ports on a swivel turret maximize hose routing options
  • External intermediate pressure adjustment enables technicians to fine-tune performance quickly and easily without the need for disassembly


  • Jewel colored Deep Blue PVD exterior finish provides superior scratch and corrosion resistance
  • A full titanium interior barrel makes second stage super lightweight and resistant to corrosion
  • Full metal valve housing is able to withstand years of aggressive diving
  • Air-balanced valve smoothes out the inhalation effort when diving at varying depths and supply pressures
  • User controls include a diver-adjustable inhalation effort knob and Venturi-Initiated Vacuum Assist (VIVA) dive/pre-dive switch
  • Super-flow hose features an oversized bore (larger inside hose diameter) that allows more air to flow on each inhalation
  • Ultra-comfortable orthodontic mouthpiece is easy to grip yet doesn't inhibit airflow


  • Air balanced flow-through piston. First stages with air balanced pistons deliver significantly more air to the second stage than any other first stage, while their performance is totally unaffected by the changing tank pressure.
  • Two opposite high pressure ports. The arrangement of high and low pressure hoses is crucial to diving comfort. Two opposite high pressure ports allow you to position the first stage either pointing up or down. This lets you run your gauges either on your right or left side plus increases the freedom of movement for head and neck.
  • Multiple low pressure ports. For ultimate freedom in the arrangement of low pressure hoses, the MK25 offers five HF (high flow) portson a swiveling turret, which allows for 360 degree swivel of hoses. High flow ports deliver about 15 percent more air than conventional ports.
  • DIN/INT first stage configurations. To ensure worldwide compatibility, all SCUBAPRO regulator systems are available in a 232bar INT version as well as 300bar DIN versions.


  • A quality second stage can significantly reduce stress and enhance diver safety by providing a smooth, low-effort breathing response, resulting in ample yet controllable quantities of air.
  • Theair-balanced valve technologyof SCUBAPRO's S600 second stage features a balancing chamber in the second stage mechanism, slightly offsetting the force of the downstream air entering from the first stage.
  • The S600's precision moldedcarbon fiber and technopolymer housing offerslow friction, light weight, and corrosion and cold water resistance for long life.
  • The diver adjustable inhalation effort control knobenables you to adjust the breathing effort to match dive conditions
  • SCUBAPRO's patentedVenturi Initiated Vacuum Assist (VIVA)uses the power of a vacuum assist to reduce work of breathing and increase breathing comfort.
  • SCUBAPRO uses a comfortable orthodontic mouthpiece on the S600 to reduce jaw fatigue and gum irritation. It was developed by dentists and dental laboratories and lasts longer than any other mouthpiece, because only minimal effort is required to hold it comfortably in place.
  • A sturdy high flow hose with kevlar lining offers extra durability and maximum airflow.


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