Oceanic FDX-10 Balanced Diaphragm First Stage Forged from marine-grade brass- the FDX-10 features optimized air paths and angled hose ports for superior performance and comfort. A sealed Balanced Diaphragm design- Enviro Kit and patented DRT TM (Dry Regulator Technology) isolate all internal components from the environment. 2 high pressure and 4 low pressure ports allow convenient and comfortable hose routing. Oceanic DVT (Dry Regulator Technology) Ever wonder why they call it a "dust cap" and not a water cap? Oceanic DVT eliminates the possibility of moisture entering the first stage with a simple- yet ingenious design. No hassle- no worries. What about performance? Oceanic DVT doesn't impact first stage performance even at 50m with just 13 bar in your tank. The result? An end to flooded regulators! Oceanic's exclusive Oceanic DVT is designed to automatically eliminate moisture intrusion and contaminants from entering your breathing system.