MK25 EVO First Stage Only -DIN

SCUBAPRO leads the way in piston-controlled first stages. The MK25 is the perfect example, bringing you ultra-stable intermediate pressure which ensures an instant and constant delivery of ultra-high airflow. You can count on incomparable performance for all diving conditions and at any depth. Made of chrome-plated, marine-grade brass, the MK25 will be your diving partner for a lifetime.

$399.00

Balanced-piston first stages are the first choice of demanding deep sport divers and professionals. 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 changing tank pressure and depth. A balanced piston allows the use of lighter and more sensitive components, resulting in an ultra-fast breathing response, instant delivery of air on demand, and extra-high airflow, especially in low tank pressure ranges.

MK25 EVO First Stage:

  • Air balanced flow-through piston in a chrome-plated brass body provides constant and effortless airflow un- affected by depth, tank pressure, or breathing rate.
  • Patent pending XTIS (Extended thermal Insulating system) fully 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.
  • New spring insulating coating, body insulating bushing, antifreeze 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 or down.
  • 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.
  • Available in a 3364psi/232bar INT configuration.
  • Weight: INT 232 (oz/g): 27.9/790.
  • Airflow at 2900psi/200bar: (l/min/ SCFM): >8500/301.
  • Intermediate pressure (psi/bar): 130-142/9.0-9.8.