The S270 is available in combination with the MK11, an air-balanced diaphragm design providing effortless airflow regardless of depth, tank pressure, or breathing rate. The first stage’s chrome-plated brass body is completely isolated from the elements, preventing water and contaminants from fouling the internal mechanism and improving cold-water performance. The air-balanced S270 offers consistent breathing performance in a durable, scratch-resistant design that withstands years of tough use.
It features a Dive/Pre-Dive adjustment, an effective purge button, and a compact exhaust tee for minimized exhalation resistance.
1st STAGE
◊ Consistent, effortless airflow, regardless of depth, tank pressure, and breathing rate, thanks to balanced diaphragm control
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◊ Body made of chrome-plated saltwater-resistant brass
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◊ No water ingress due to the completely externally isolated design
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◊ Maximum hose routing versatility with two high-pressure and four low-pressure ports,
including two high-flow ports
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◊ Externally adjustable intermediate pressure via adjustment screw on the body block
(by technician)
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◊ Improved haptics and feel when screwing on the DIN stage due to grippy,
rectangular handwheel
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◊ Available as INT/232 bar or DIN/300 bar model
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◊ Weight: INT 232: 710 g; DIN 300: 490 g
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◊ Airflow at 200 bar: > 5,500 l/min
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◊ Intermediate pressure (bar): 9.2–9.8 bar
- 2nd Stage
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◊ The air-balanced valve ensures consistent breathing resistance when diving at different depths and ambient pressures
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◊ The technopolymer plastic barrel with a metal thread and balanced valve reduces weight and provides a surface where ice crystals cannot adhere when diving in cold water
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◊ The Dive/Pre-Dive adjustment is easy to operate even with thick gloves
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◊ More compact, lighter, and better breathing performance than the predecessor model S560
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◊ The lightweight housing with a fiberglass-reinforced nylon core and a special
PU outer layer is extremely durable and reduces jaw fatigue – for
greater diving comfort
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◊ The exhaust tee is compact and efficient for minimized exhalation resistance
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◊ The compact Hi-Flow mouthpiece is comfortable to wear, made of FDA-
approved silicone and has a large
cross-section for maximum airflow
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◊ The Super-Flow hose features a large bore through which sufficient air can flow
with every inhalation
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◊ CE certified according to the latest European standards EN250A for all
diving conditions, including extremely cold water
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◊ Due to its robust construction and solid breathing performance, it is
excellently suited for diving courses, rental, and professional divers
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◊ Weight (without mouthpiece): 145 g
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◊ Airflow at 200 bar: 1850 l/min
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