MK25/S600 DEEP BLUEHomeRegulatorsMK25/S600 DEEP BLUE

Hover over images to zoom.

Technical Information

MK25 DEEP BLUE First Stage:

  • 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 opposing high pressure ports allow you to position the first stage pointing up or down. This enables you to run gauges on the right or left side, plus it increases the freedom of movement for head and neck.
  • Five high-flow low pressure ports on a swivel turret maximize hose routing options. High flow ports deliver about 15 percent more air than conventional ports.
  • External intermediate pressure adjustment enables technicians to fine-tune performance quickly and easily without the need for disassembly.
  • Available in either 3364psi/232bar INT or 4350psi/300bar DIN configurations.
  • Weight: INT 232 (oz/g): 27.9/790; DIN 300 (oz/g): 20.1/572.
  • Airflow at 2900psi (l/min/SCFM): >8500/301.
  • Intermediate pressure (psi/bar): 130-142/9-9.8.
S600 DEEP BLUE Second Stage:
  • Jewel colored Deep Blue PVD exterior finish provides superior scratch and corrosion resistance.
  • Precision molded carbon fiber and technopolymer housing is lightweight and offers cold-water and corrosion resistance for long life.
  • 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.
  • Weight: 6.2oz/175g.
  • Airflow at 2900psi: 1850 l/min - 66 SCFM.
  • Maximum low pressure: 203psi/14bar.


Ease of breathing is the essence of this reg system -- plus 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.

You may also be interested in: