Our compact C300 Systems offer uncompromising breathing performance for avid recreational divers. The C300 second stage is lightweight with anti-scratch cover. It allows all the adjustment options of a high-end regulator while remaining a midrange system. The C300 second stage features:

• The Optimal Flow Design valve (OFD) for reliable and high air flow, improving work of breathing compared to a downstream valve.
• Diver-adjustable coaxial VIVA for powerful inhalation assistance and prevention of free-flow.
• Diver adjustable inhalation control for personalized breathing effort.
• Redesigned mouthpiece tube allows better exhaust airflow.

MK25 First Stage

• Air balanced flow-through piston
• Chrome plated brass body
• Cold water: Anti-Freeze protection
• Externally adjustable intermediate pressure
• Low pressure ports: 5 on swivel turret
• High pressure ports: 2
• Tank connection: INT 230 bar / DIN 300 bar
• Weight: : INT 230 825g / 29.1 - DIN 300 592g / 20.9oz
• Air Flow at 200bar: >8500 l/min - 301 SCFM
• Intermediate pressure: 9-9.8 bar / 130-142 psi

C300 Second Stage

• OFD downstream valve
• Coaxial flow
• Diver-adjustable inhalation effort
• Diver-adjustable Venturi-Initiated Vacuum Assist (VIVA)
• Super-flow hose
• High comfort orthodontic mouthpiece
• Technopolimer valve housing
• Weight: 175g / 5.2oz
• Air flow at 200 bar: 1550 l/min - 50 SCFM
• Maximum low pressure: 14 bar / 203 psi
• Available with either 232bar INT or 300bar DIN first stages.

The MK25/C300 has our ultimate balanced piston first stage paired with a reliable recreational second stage, making this a remarkable all-rounder system. MK25 first stage features include:

• Air balanced flow-through piston provides constant and effortless air flow unaffected by changing tank pressure.
• 2 high and 5 low pressure ports on a swiveling turret.