TUSA Duo Air ll – SS-0002

TUSA Duo Air ll – SS-0002

The Duo Air II combines an alternate second stage and power inflator in one unit. It offers a way to keep both functions in a familiar position on a compatible BCD, with a large purge button and low-profile mouthpiece for breathing use.

Features and benefits

• Combined alternate and inflator. The Duo Air II brings breathing and buoyancy controls together on a compatible BCD, reducing separate hose clutter.
• Balanced power inflation. The air-balanced inflator gives control of gas addition to the BCD through the inflation button.
• Manual inflation and deflation. The oral-inflation and deflation control remains available alongside the power-inflate button.
• Accessible purge. The large purge button is easy to locate and press when clearing the second stage, including when wearing gloves.
• Low-profile mouthpiece. The silicone mouthpiece keeps the breathing section compact at the end of the BCD hose.

Setup and compatibility

BCD connection and hose compatibility must be checked before fitting. Use the alternate-air procedure appropriate to this combined inflator and your training.

Practise the air-sharing procedure for a combined inflator and alternate regulator with your instructor. The short BCD-hose position changes how the unit is used compared with a conventional octopus.

Care, rinsing and storage

After each dive, connect the assembled regulator to a scuba cylinder and open the valve to pressurise the system. Keep it pressurised while fully submerging the first stage, second stages, the attached alternate-air inflator and connected supply hoses in fresh water. This allows thorough cleaning of the exposed components and hoses while helping prevent water entering the internal air passages, where it can cause corrosion and damage. Keep the cylinder secure throughout cleaning.

For routine cleaning, Dive Gear Australia recommends Cressi Neoclean Wetsuit Wash Neoprene Cleaner 500 mL or Revivex Wetsuit Shampoo 10 oz to help remove salt, chlorine and everyday residue. Dilute according to the cleaner’s label, then rinse thoroughly with fresh water.

Keep the regulator pressurised throughout washing and rinsing. Lift it out of the water and dry the first stage and cylinder connection before closing the cylinder valve, releasing the pressure and disconnecting. Fit the clean, dry dust cap, then allow the regulator to dry in the shade. Store it with the hoses loosely curved, without sharp bends or tension.

Follow the BCD manual separately for cleaning its bladder and corrugated hose. Before each dive, inspect the mouthpiece, hoses and connections, and check both breathing and inflation controls. Have your regulator serviced by an authorised TUSA technician at the interval specified in its manual, or sooner if it leaks, is damaged or its breathing performance changes. Leave internal adjustments and repairs to a qualified technician.