The new S270 is available with a MK11 first stage for divers seeking an air-balanced diaphragm design delivering effortless airflow unaffected by depth, tank pressure or breathing rate. The MK11's chrome-plated marine-grade brass body has sealed internal parts to prevent water and pollutants from fouling the inner mechanism while enhancing cold water performance. The new air balanced S270 provides smooth breathing performance in a bulletproof anti-scratch design that's able to handle years of hard use. It comes with a dive/predive switch, an effective purge, and a compact exhaust tee that minimizes exhalation effort.
S270 Second Stage
Air-balanced valve smoothes 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, rental and professional accounts due to its bulletproof construction and solid breathing performance.
Weight (without mouthpiece): 5.1oz/145g
Airflow at 2900psi/200bar: 1850 I/min – 66SCFM.
MK11 First Stage
Air-balanced diaphragm design delivers constant and effortless airflow unaffected by depth, tank pressure, or breathing rate.
Marine grade brass body has sealed internal parts to prevent water and pollutants from fouling the inner mechanism while enhancing cold-water performance.
Two high pressure ports, two standard low-pressure ports and two high-flow low pressure ports maximize hose routing options.
External intermediate pressure adjustment enables technicians to fine-tune performance quickly and easily.
Weight (oz/g): INT 232, 30.3/860; DIN 300, 22.6/640.
Airflow at 2900psi/200bar: (1/min/ SCFM): >5500/ 195,
