The MK17 EVO / A700 takes our extraordinary breathing A700 and pairs it with the Mk17 Evo First stage, which is designed for harsh environments and for use in ice, cold water or polluted environments. Resistance to cold has indeed been a key element in the engineering of the MK17.
The muscular A700, with its precision handcrafted full-metal casing, front cover and valve housing, offers best-in-class breathing performance, including effortless inhalation and an ease of exhalation that is unmatched.

Features:

• Dry ambient pressure chamber, providing better performance in cold water than any other diaphragm regulator. The diaphragm design prevents the entry of water into the first stage mechanism and enhances a trouble-free operation, even in the coldest conditions.

• Patented finned cap with ribs increase surface area to maximise heat transfer from the water to warm the cold internal components.

• The balanced technology provides consistent performance at all cylinder pressures, at any depth and optimises the second stage performance, thus allowing for effortless breathing.

• Two opposite high pressure ports- The arrangement of high and low pressure hoses is crucial to diving comfort. Two opposite high pressure ports allow for an individual positioning of the first stage (pointing up or down). This allows the diver to position the gauges either on the right or left side and increases the freedom of movement for head and neck.

• Multiple low pressure ports- For ultimate freedom in the arrangement of low pressure hoses,  the MK17 features four stationary low pressure ports, two of them HF.  High flow ports deliver about 15% more air than conventional ports.

• Easy-to-use, adjustable inhalation effort knob to achieve maximum, personalized comfort

• Super-flow hose features an oversized bore that allows more air to flow on each inhalation.

• Air-balanced first stage diaphragm delivers constant and effortless airflow unaffected by depth, tank pressure, or breathing rate

• Environmentally sealed system prevents water and pollutants from fouling the inner mechanism and is extremely resistant to freezing

• Dry chamber is equipped with a double spring making it more compact and reliable.

• Two opposing high pressure ports allow the first stage to be positioned either up or down, plus provide for an optimum hose/transmitter layout

• Swivel turret comes with four High-Flow LP ports plus one axial Super High-Flow LP port to maximize hose routing options for technical diving layouts