MK17 EVO 2/S620Ti

The SCUBAPRO MK17 EVO 2/S620Ti pairs a sealed balanced diaphragm first stage with a compact titanium-barrel second stage, a combination aimed at cold and silty water. The MK17 EVO 2 uses a dry chamber with a twin spring layout and a dual diaphragm system to keep water and pollutants out of the mechanism, and two high pressure ports set on a 15-degree angle that also take a SCUBAPRO transmitter directly.

The S620Ti carries the large diaphragm of the S600 inside a smaller reinforced technopolymer case, with a corrosion-free titanium barrel and a flow-engineered exhaust tee. Controls are an easy-grip diver-adjustable inhalation effort knob and a VIVA (Venturi-Initiated Vacuum Assist) lever, and the second stage is fitted with a compact orthodontic mouthpiece and a Super-Flow hose with an oversized bore. Both DIN 300 and INT 232 connections are available.

First stage: MK17 EVO 2, sealed balanced diaphragm, forged chrome-plated marine-grade brass, 4 high-flow low pressure and 2 high pressure ports, 860 g in INT 232, intermediate pressure 9.2 to 9.8 bar (133 to 142 psi). Second stage: S620Ti, air-balanced, titanium barrel, reinforced technopolymer case. Connections: DIN 300 and INT 232.