This total sealing system also allows for a dry ambient pressure chamber which works to prevent freezing, provides better protection and improves performance, ensuring trouble-free operation no matter how cold or murky the water gets.

This new version is more compact than its predecessor yet delivers better breathing performance. Its improved internal design allows more airflow from the LP ports which have also been configured for optimum hose routing.

S600 SECOND STAGE

A second stage regulator must translate natural breathing behaviour into mechanical reality. A high quality second stage can significantly reduce stress and enhance diver safety by providing smooth, low-effort breathing response, resulting in ample yet controllable quantities of air.

The designation balanced and classic downstream are also distinguishing marks for second stages and again imply ultimate flow performance and stability in addition to reliability, simplicity and solid performance.

Technical Information

MK17 EVO First Stage:

• Air balanced 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.
• More compact design features a smaller dry ambient pressure chamber and spring, although the bulletproof inner parts remain the same.
• Dry ambient pressure chamber increases freezing resistance, ensuring consistent airflow in the coldest conditions.
• Substantial increase in airflow -- 6900 l/min versus 6500 l/min - includes improved balance of air supply pressure.
• Two high pressure and four high-flow ports maximize air delivery and hose routing options.
• High-flow performance is available from all four LP ports which are configured for optimum hose routing.
• Available in a 3364psi/232bar INT configuration.
• Weight: INT 232 - 30oz/850g.
• Airflow at 2900psi/200bar: 6900 l/ min - 230 SCFM.
• Intermediate pressure (psi/bar): 130-142/9.0-9.8.

S600 Second Stage

• Air balanced valve
• Diver-adjustable inhalation effort
• Diver-adjustable Venturi-Initiated Vacuum Assist (VIVA)
• Super-flow hose
• High comfort orthodontic mouthpiece
• Full metal valve housing
• Weight: 193g / 6.8oz
• Air flow at 200 bar: 1850 l/min - 66 SCFM
• Maximum low pressure: 14 bar / 203 psi