Combining SCUBAPRO’s best-selling second stage and its top-performing first stage
is a match made in diver heaven. The MK25 EVO offers excellent resistance to freezing,
superb inhalation sensitivity and instant delivery of air on demand. The S600, with its
rugged fiberglass rugged fiberglass reinforced nylon casing and stainless steel front
face front face, provides a steady, effortless flow of air, regardless of depth.
◊ Air balanced flow-through piston in a chrome-plated brass body provides constant
and effortless airflow unaffected by depth, tank pressure, or breathing rate.
◊ Patented XTIS (Extended thermal Insulating system) thermally insulates the inner
mechanism from the environment, improving cold-water resistance by 30% and
delaying ice formation in extreme cold-water conditions without compromising
breathing performance. Key insulation system components are visible in blue.
◊ Spring insulating coating, body insulating bushing, anti-freeze cap, bigger body and
cap thread all work in concert with the XTIS to improve cold-water performance.
◊ Anti-freeze protection radically increases breathing reliability when diving in the
most extreme water temperatures.
◊ Two opposing high pressure ports allow the first stage to be positioned either up
◊ Four high-flow and one axial super 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.
◊ Available in either 3364psi/232bar INT or 4350psi/300bar DIN configurations.
◊ DIN version comes with a dual-compound wheel that features an ergo shape and
soft grip on a rugged black nylon frame.
◊ Airflow at 2900psi/200bar: (l/min/SCFM): >8500/301.
◊ Intermediate pressure (psi/bar): 130-142/9.0-9.8.
◊ Air-balanced valve smoothes out the inhalation effort when diving at varying depths
and supply pressures.
◊ Metal valve housing is able to withstand years of aggressive diving.
◊ 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 that allows more air to flow on each
◊ Ultra-comfortable orthodontic mouthpiece is easy to grip yet doesn’t inhibit airflow.
◊ Airflow at 2900psi/200bar: 1850 l/min – 66 SCFM.
Combines the features of the R195 with a high visibility yellow cover and a 1 meter long
yellow hose for easy sharing.
◊ Classic Downstream Valve
◊ Adjustable VIVA
◊ Reversible Hose Attachment
◊ Larger Diaphragm
◊ Super comfort High-flow mouthpiece