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, two low pressure and two high-flow LP ports maximize hose routing options.
External intermediate pressure adjustment enables technicians to fine-tune performance quickly and easily.
Weight): INT 232: 710g; DIN 300: 490g
Airflow at 200bar: (l/min): > 5500
Intermediate pressure: 9.0-9.8 bar
Second Stage

Air-balanced valve for smooth inhalation effort at varying depths and supply pressures.
Compact rugged fiberglass reinforced nylon casing and new exhaust tee take up little space in a dive bag.
Stainless steel frame on the front cover adds the SCUBAPRO C-Series signature.
The poppet and lever allows the design to maintain the same overall size as the C350.
The exhaust tee is based on the S620 Tis design and contributes to better work of breathing (a 10% improvement over the C350).User controls include a diver-adjustable inhalation effort knob and Venturi-Initiated Vacuum Assist (VIVA).
Large purge button is easy to activate, even wearing thick gloves.
Super-flow hose features an oversized bore that allows more air to flow on each inhalation.
Compact Hi-Flow mouthpiece improves airflow as well as mouth comfort, fitting all mouth sizes, from smaller to largest.
Weight: 171g.
Airflow at 200bar: (l/min): 1600 bar