ScubaPro MK2 EVO/S270 Regulator


The new S270 second stage features an air-balanced design that’s patterned after the popular S620 Ti, whose compact casing and internal aerodynamics produce extremely low work of breathing.

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Recreational divers looking for solid performance in a regulator system and ready to step up from their entry-level systems are going to love the MK2 EVO/S270. The new S270 second stage features an air-balanced design that’s patterned after the popular S620 Ti, whose compact casing and internal aerodynamics produce extremely low work of breathing. Designed to last in tough conditions, a fiberglass-reinforced nylon core combined with a new PU outer layer result in a bulletproof anti-scratch casing. In addition to breathing performance, the S270 offers an effective purge and a dive/predive switch that’s easy to use even wearing thick gloves. The exhaust tee is compact and efficient in minimizing exhalation effort. Teamed with SCUBAPRO’s classic MK2 EVO, the only downstream piston-style first stage with internal components specifically designed to resist freezing in extreme cold-water conditions, this new regulator combo is affordable and durable while delivering smooth and reliable breathing performance. In addition to recreational divers, the MK2 EVO/S270 is a great choice for training and professional divers seeking solid performance from a durable regulator system.


MK2 EVO First Stage Features

  • Classic downstream piston design features a chrome-plated brass body with one high pressure and four low pressure ports
  • Patented XTIS (Extended Thermal Insulating System) fully isolates the mechanical elements from the cold, increasing freezing resistance by an average of 50% over its predecessor without compromising breathing performance
  • Additional internal technical improvements include a spring insulating bushing and coating, an insulating piston bushing, an insulating sleeve and an antifreeze cap, all of which contribute to freezing resistance
  • Chrome-plated brass body is smaller than its predecessor but houses an oversized piston that provides better breathing performance by increasing airflow
  • Stainless steel removable orifice allows for easier maintenance while extending regulator life
  • Meets EN250-2014 standards for cold-water breathing performance
  • Airflow at 2900psi/200bar: >3000-106
  • Intermediate pressure (psi/bar): 138-145/9.5-10

S270 Second Stage Features

  • Air-balanced valve smooths out the inhalation effort when diving at varying depths and supply pressures
  • Technopolymer plastic barrel with a metal thread and a balanced valve helps save weight and provides a surface that ice crystals can’t grab onto when diving in extreme cold water
  • Dive/predive switch is easy to use even wearing thick gloves
  • More compact, lighter weight and better breathing performance than its S560 predecessor
  • Lightweight casing, made of a fiberglass-reinforced nylon core and a special PU outer layer, is extremely durable plus helps reduce jaw fatigue and improve diving comfort
  • The exhaust tee is compact and very efficient in minimizing exhalation effort
  • Compact Hi-Flow mouthpiece is comfortable, made with FDA-approved silicone, and features a large cross-section to maximize airflow
  • Super-flow hose features an oversized bore that allows more air to flow on each inhalation
  • CE certified to the latest EN250A European Standards for all diving conditions, including extreme cold water
  • Well-suited for diving classes and dive professionals due to its bulletproof construction and solid breathing performance
  • Weight (without mouthpiece): 5.1oz/145g
  • Airflow at 2900psi/200bar: 1850 l/min – 66 SCFM


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