The Neptune II NIRA, introduced in 1998, is known world-wide. It is the integration of the Neptune II full face mask and the NIRA second stage. The NIRA (Neptune Integrated Regulator Adapter), an adjustable second stage specifically designed for the features of the Neptune II, maximizes the mask’s performance.

Sometimes, when a second stage makes contact with the water’s surface, it begins to free flow. With the NIRA, a double position deflector, which partially covers the orifice through which air enters the second stage, eliminates free flows. The effort required to “crack” the seal upon inhalation is manually adjustable to accommodate different conditions and depths. The NIRA is designed to be used at low temperatures, conditions in which other regulators usually freeze. The purge button is large and oval-shaped for easy identification. A special locking device prevents the front cover from becoming unscrewed.

Neptune II NIRA Includes:
Full Face Mask with integrated regulator, and hose

Options Include:
The 6600 1st stage is a balanced piston design made of chrome plated brass and steel. Contains 2 HP ports and 4 LP ports and a rotating tower.

The TR94 Polar 1st stage is a balanced diaphram 1st stage made of chrome plated brass and steel. Contains 2 HP ports and 4 LP ports. The TR94 Polar is also dry sealed and contains anti-freeze to work in cold weather.

The NEPTUNE II NIRA 50/60 Psi is designed to be used with surface supplied air and cannot be use with standard diving tanks.