Mares Alt Air Control Integrated Scuba Octo ´´Demo´´ 416893 035071-a

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  • Nitrox compatible to 40% (The recreational limits of Nitrox)
  • VAD (Vortex Assisted Design) by-pass system for effortless, natural breathing under all conditions
  • Inflator integrated secondary air source
  • The Alt Air Control Integrated Octo is positioned at the end of the Buoyancy Compensator hose
  • Eliminating hose clutter, because you use the same hose to supply both the power inflator and your alternate air source, also known as safe-2nd or Octo
  • Specially designed mesh grid cover to prevent unwanted free-flow even
    in the strongest currents
  • Light weight and compact design 
  • Convenient, fixed location  
  • Replaces loose, hanging octo
  • Compatible with all Mares BC's - except with BC's that have the AirTrim Systems

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Questions and Answers for Mares Alt Air Control Integrated Scuba Octo ´´Demo´´:

  • Marie:

    Just to confirm, (1) this was never used, only on display? (2) would I still get the manufacturers warranty?

    Aaron  (Certified Scuba Instructor at

    Dear Marie, Open Box/Demo/Like New items: 2 year warranty - This is an open boxed product that does not carry Mares warranty.

  • franco:

    this is new never use

    Elliott  (Certified Scuba Instructor at

    Like new, not used condition.

  • R:

    What exactly constitutes a used-demo versus used versus, say, open-box? Im considering this but havent found anywhere on your website that states exactly I would expect. Is this simply a like new open box, sampled in the store, or did it actually go out, get used, and THEN returned?

    Bob  (Certified Scuba Instructor at

    Open box demo indicates a never used, display item only. Used-Demo indicates the item could have been used in a confined environment and is a used item in like new condition.

  • Terry:

    Does it come with box and adapters?

    Bob  (Certified Scuba Instructor at

    It may not come with the original packaging, but it will come complete with everything the manufacturer originally included.

  • Percy:

    Will this fit a Tusa Liberator BC

    Arthur  (Certified Scuba Instructor at

    Hello, no this integrated octo wouldn''t fit that bc.

  • James:

    If I order the Mares Prime and the Mares Air Control, can I have the air control installed before it ships or will I have to do that myself or at a Local Dive Shop when it arrives? Thanks!

    Bob  (Certified Scuba Instructor at

    Ordered together, we will install the item prior to shipping.

Air Control

The evolution

• Combine hose for octopus and inflator
• Ergonomic shape
• Pre-oriented mouthpiece for easier use

Air Control, the new mares alternative air source, offers the option to use the same hose for the octopus and the inflator. The pre-oriented mouthpiece makes it usable as a quick and easy octopus. The cover features the Mesh Grid system, made of soft material so the purge button is easy to push, even when wearing gloves. It complies with EC standards and with special adaptors that can be easily assembled on all BCs. The ergonomic shape allows one-handed use.

Product Details
Code: 416893
Second stage weight (g): 241 INT
Nitrox: -

Product Features

Fluid Dynamic Deflector: Receives and properly directs the airflow from the bypass tube to the mouthpiece.

Mesh Grid: Patented design which reduces the impact of water flow onto the second stage diaphragm, thus eliminating free flows even in strong currents.

Superflex Hose: Extreme light weight and exceptional softness guarantee the maximum freedom of movement.

Ultralight Techno Polymer: Abrasion resistant and affordable, ideal for diving in warm and moderate water temperatures.

Vortex Assisted Design: The air bypass tube conveys air to the mouthpiece creating a swirling vortex with a low pressure area in the center that keeps the diaphragm down during inhalation, for very sensitive and easy breathing at all depths.

The air coming from the LP-hose passes through the second stage control valve and is conveyed directly to the mouthpiece through the by-pass tube (Mares patented). In the mouthpiece connector, the airflow creates a swirling action, or “vortex”. The core of the vortex is a low-pressure area, which, during inhalation, helps to hold down the second stage diaphragm, thus markedly increasing regulator sensitivity. The decisive advantage of the VAD System lies in the precision of its control. The VAD supplies the inhalation effort with just the intensity required.

Another advantage of the VAD system is related to the bypass tube, through which most of the air is delivered. In cold water diving, this system prevents ice crystals (which can be generated by the expansion of humid air in cold temperatures) from interfering with the proper operation of second stage components.

View all Mares Octos/Spare Air

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