Oceanic EDX First Stage – DINThe eDX offers a balanced diaphragm design and is made of forged chromed marine brass. The balanced diaphragm, first stage regulator is inherently environmentally sealed. Water enters the main spring cavity and the pressure increase from the water is transmitted to the internal components by the impermeable diaphragm membrane. The benefit of this type of first stage design is that none of the delicate internal parts are exposed to contaminants such as