This high performance regulator system pairs the Delta 4 adjustable Oceanic's easiest breathing second stage with the top of the line FDX10 first stage, featuring Oceanic's exclusive DVT SECOND STAGE Introduced in 1989, the Delta has been refined and updated over the years. The latest version, the Delta 4.2, is one of only two Oceanic second stages with AVS the Adjustable Venturi System. This allows the diver to adjust inhalation effort so the second stage won't freeflow during shore entries or long surface swims. Additionally, the Delta 4.2 has Oceanic's patented Dynamic Adjustment feature. This lets a diver set breathing resistance. The adjustment only needs to be made once; the Delta 4.2 maintains the setting no matter the depth of the dive.
The Delta 4.2's ABS/Polycarbonate housing and anodized aluminum cover ring are exceptionally tough. They weigh just 6.8 ounces and, along with orthodontic mouthpiece, produce minimal jaw fatigue no matter the length of the dive.
FIRST STAGE The FDX10 offers a balanced diaphragm and is made of forged marine brass. It features DVT (Dry Valve Technology), an innovative design that keeps moisture and contaminants out of the first stage, even if you forget to put the dust cap on. This means internal components remain corrosion and bacteria free. It also means the FDX10 is excellent for ice diving (it won't freeze up) or diving in waters filled with contaminants or sediment (it won 't corrode).
The DVT system helps keep air flow to the diver unrestricted. It starts to work as soon as the dive is over, before the regulator is even removed from the tank.
At 28 ounces, the FDX10 is one of Oceanic's lightest weight first stages. As is the Delta 4.2, it comes ready to use with air or nitrox mixtures up to 40 percent. Two high pressure and four low pressure ports assure a place for all your necessities and accessories.