Scubapro's best-selling air balanced second stage and its top-performing air balanced piston first stage is a match made in diver heaven. Well-known for its low work of breathing, year after year this combo has consistently ranked as one of the top-performing reg systems on the market. The MK25 EVO first stage lets you enjoy an ultra-fast breathing response, instant delivery of air on demand, great sensitivity and impressive airflow. The S600 delivers smooth and easy inhalation and exhalation while offering efficient user controls, including a powerful purge, an inhalation effort control knob and Venturi Initiated Vacuum Assist (VIVA). Together they provide a steady flow of air, regardless of depth, water temperature, or workload.
FIRST STAGE:
- 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 and delaying ice formation in extreme cold-water conditions without compromising breathing 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 or down.
- Five high-flow low pressure ports on a swivel turret maximise hose routing options.
- External intermediate pressure adjustment enables technicians to fine-tune performance quickly and easily.
SECOND STAGE:
- Air balanced second stage valve smoothes out the inhalation effort at varying depths and supply pressures.
- Second stage’s rugged reinforced technopolymer case and front cover with stainless steel frame looks good plus is extremely durable.
- Metal valve housing (barrel) 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 (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.
1st Stage Type | Piston |
2nd Stage Design | Air-balanced valve |
2nd Stage Series | S Series |
Water Temperature | Cold, Temperate, Warm |
Connector Type | INT A Clamp or DIN |
Nitrox Mix | Up to 40% |
HP Ports | 2 |
LP Ports | 5 |
1st Stage Materials | Chrome-Plated Brass |
2nd Stage Materials | Fibreglass reinforced nylon casing |
Product Weight | 990g (A Clamp) / 772g (DIN) |
Adjustable 2nd Stage | Yes |
Air flow at 200 bar | 1850 l/min |