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Regardless of which type of alternate air source you select, remember that its performance will depend on the ability of the regulator first stage to deliver air, particularly when it is supplying two second stages and a power inflator. The bottom lines: Given the type of diving you plan to do, how will it work for you in a worst-case scenario? How much risk are you willing to accept? If you dive solo, under demanding conditions or in overhead environments, the greater your need for a completely independent air source and a high-performance regulator as your alternate air source.
(Excerpt used from New Diver Magazine)
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Mfg Part Number :
IR-3

TUSA Duo-Air

Free Standard Shipping

TUSA Duo-AirCustomer reviews

 



  • Nitrox compatible to 40% (The recreational limits of Nitrox)
  • Inflator integrated secondary air source
  • The Duo Air 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
  • Compatible with all BC's except by Aeris, Aqua-Lung, Cressi, Dacor, Oceanic, SeaQuest, TUSA models with the A.P.A. Active Purge Assist inflator system, US Divers and XS Scuba
  •  MANUFACTURER'S WARRANTY

And the reviews are in:
"Excellent" - Scuba Lab

UPGRADES:
Ideations Surface & Underwater Air Horn Dive Alert Plus V.2 Type III Add $76.50
Options: 



Scuba Tool Master $19.95

Deluxe Regulator Dive Bag $71.50

Deluxe Heavy-Duty Mesh Backpack Dive Bag $39.95

  Retail:
$220.00

You Pay:
$199.95

You Save:
$20.05

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Mfg Part Number :
8450

Seac Synchro Octo

Free Standard Shipping

 



  • Brand new for 2013
  • Hi-Viz yellow face cover
  • Simple to maintain
  • Large Purge button
  • "Diver Adjustable" venturi to prevent unwanted free-flow
  • Nitrox compatible to 40% (the recreational limits of nitrox)
  • FULL MANUFACTURER’S WARRANTY
UPGRADES:
Scuba Deluxe Round Protective Regulator Bag Add $29.95
Options: 



Scuba Tool Master $19.95

Breakaway Scuba Octo Holder $7.95

Scuba Equipment Care & Maintenance Book $19.95

  Retail:
$135.00

You Pay:
$119.95

You Save:
$15.05

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Mfg Part Number :
RAS3

H2O Redundant Air System 3

 



  • Free Tank mount bag included
  • Station Filler included
  • Nitrox Compatible to 40% (The Recreational Limits of Nitrox)
  • RG3V balanced diaphragm environmentally sealed 1st stage 
  • 2nd stage swivel eliminates jaw fatigue and adds to overall comfort
  • Diver Air "On" and "Off" Switch 
  • Bright "Hi-Viz" neon yellow cover 
  • Available with 13 cubic foot or 19 cubic foot 3000 psi aluminum cylinder   
  • FULL MANUFACTURER'S WARRANTY
UPGRADES:
Scuba Tank Carrier Add $12.95
Air System with 19 cubic foot Tank Add $38.00
Options: 



Deluxe Diver Tool And Repair Kit $34.95

Trim Weight Tank Pouch $10.00

Deluxe Tank O-Ring Kit and Key Chain $5.95

  $439.95

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Mfg Part Number :
0100-006

Poseidon Jetstream Octo

Free Standard Shipping

 



  • Jetstream Octopus has the exact same performance as the main second stage ensuring it can be used in the most extreme situations
  • FULL MANUFACTURER'S WARRANTY
UPGRADES:
Scuba Breakaway Octo Holder Add $7.95
Options: 



Deluxe Regulator Dive Bag $71.50

Polar Fleece Beanie $12.95

Scuba Tool Master $19.95

  Retail:
$296.95

You Pay:
$271.59

You Save:
$25.36

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Mfg Part Number :
973VMPK

Submersible Systems Vehicle Mounting Sleeve.

 






Spare Air Safety Leash $11.95

Spare Air Travel Pack $17.95

Mini Pressure Gauge For Spare Air $49.95

  $44.00

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Mfg Part Number :
RG320

XS Scuba Airwave Octo ´´Like New´´

 



"Scuba Lab Testers Choice and Best Buy!"
  • Nitrox Compatible to 40% (The Recreational Limits of Nitrox)
  • "Diver Adjustable" venturi to prevent unwanted free-flow
  • Bright "hi viz" yellow accents for easy identification
  • Rugged, reliable and affordable
  • Exceptional breathing performance
  • Compact, light weight design
  • Orthodontic mouthpiece
  • FULL MANUFACTURER'S WARRANTY
Yellow with Breakaway Octo Holder



Divers Tool Master $19.95

Scuba Equipment Care & Maintenance Book $19.95

Deluxe Regulator Dive Bag $71.50

  Retail:
$120.00

You Pay:
$80.00

You Save:
$40.00

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Mfg Part Number :
416893

Mares Alt Air Control Integrated Octo

Free Standard Shipping

Mares Alt Air Control Integrated OctoCustomer reviews

 



  • 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
  • FULL MANUFACTURER’S WARRANTY
UPGRADES:
Ideations Surface & Underwater Air Horn Dive Alert Plus V.2 Type II Add $76.50
Options: 



Folding BCD Hanger $11.99

Deluxe Regulator Dive Bag $71.50

Scuba Tool Master $19.95

  Retail:
$230.00

You Pay:
$199.95

You Save:
$30.05

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Mfg Part Number :
416526

Mares Prestige Octo

Free Standard Shipping

Mares Prestige OctoCustomer reviews

 



UPGRADES:
Mares Cruise Regulator Bag Black Add $24.95
Options: 



Scuba Console Protection Sleeve $9.95

Scuba Beach Towel $9.95

Scuba Tool Master $19.95

  Retail:
$160.00

You Pay:
$143.95

You Save:
$16.05

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Mfg Part Number :
0100-003

Poseidon Xstream Octo

Poseidon Xstream OctoCustomer reviews

 



  • Highly visible yellow exhaust cover
  • Same superior quality internal parts as the Xstream 2nd stage
  • Comes with 35 inch hose with built in over-pressure relief valve
  • One of the market's most reliable and safe octopus regulators
  • FULL MANUFACTURER'S WARRANTY
UPGRADES:
Scuba Breakaway Octo Holder Add $7.95
Options: 



Deluxe Regulator Dive Bag $71.50

Polar Fleece Beanie $12.95

Scuba Tool Master $19.95

  $299.00

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Demonstration Video:
Video: Hollis 321 Octo Video Review

Mfg Part Number :
240.3624.M

Hollis 321 Balanced Octo

Free Standard Shipping

Hollis 321 Balanced OctoCustomer reviews

 



  • Brand new & completely redesigned with MaxFlex Hose
    Not like most other sites that sell the old discontinued model with a standard regulator hose
  • MaxFlex hose - lightweight, flexible, double braided hose designed to
    outperform and outlive traditional rubber hoses
  • Pneumatically balanced second stage 
  • Nitrox Compatible to 40% (The Recreational Limits of Nitrox)
  • Orthodontic mouthpiece 
  • "Diver Adjustable" venturi to prevent unwanted free-flow
  • Lightweight 2nd stage to prevent jaw fatigue and add to overall comfort
  • Bright "Hi-Viz" yellow hose and 2nd stage cover for easy identification
  • 36" Hi-Viz neon yellow hose
  • FULL MANUFACTURER’S WARRANTY
UPGRADES:
Scuba Breakaway Octo Holder Add $7.95
Options: 



Scuba Beach Towel $9.95

Deluxe Regulator Dive Bag $71.50

Polar Fleece Beanie $12.95

  Retail:
$178.95

You Pay:
$159.95

You Save:
$19.00

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Mfg Part Number :
GS065

Genesis Sidekick Octo

Free Standard Shipping

Genesis Sidekick OctoCustomer reviews

 



UPGRADES:
Ideations Surface & Underwater Air Horn Dive Alert Plus V.2 Type I Add $67.95
Options: 



Polar Fleece Beanie $12.95

Divers Tool Master $19.95

Deluxe Regulator Dive Bag $71.50

  Retail:
$179.95

You Pay:
$106.95

You Save:
$73.00

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Mfg Part Number :
SS-20-Y

TUSA Platina II Octo

Free Standard Shipping

TUSA Platina II OctoCustomer reviews

 



  • New re-designed mouthpiece
  • Large Purge button
  • Tuned to resist unwanted freeflows
  • 33 inch long hose
  • Bright "Hi-Viz" yellow hose and 2nd stage cover for easy identification
  • Nitrox compatible to 40% (The recreational limits of Nitrox)
  • FULL MANUFACTURER'S WARRANTY
UPGRADES:
Scuba Breakaway Octo Holder Add $7.95
Options: 



Deluxe Regulator Dive Bag $71.50

Divers Tool Master $19.95

Polar Fleece Beanie $12.95

  Retail:
$149.00

You Pay:
$99.95

You Save:
$49.05

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Mfg Part Number :
SS10

TUSA Platina Octo

 



  • Soft elastic materials for the diaphragm
  • Very easy to service as well as overall care
  • Tuned specifically to avoid freeflow situations
  • COLOR: Yellow
  • FULL MANUFACTURER’S WARRANTY
 yellow with Breakaway Octo Holder



Deluxe Regulator Dive Bag $71.50

Divers Tool Master $19.95

Polar Fleece Beanie $12.95

  Retail:
$149.00

You Pay:
$84.95

You Save:
$64.05

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Aquatec Air 3 AIR 3 035250

Mfg Part Number :
AIR 3

Aquatec Air 3

Aquatec Air 3Customer reviews

 



  • Four in One
    • 1) Safe Second/Octo
    • 2) Power Inflator
    • 3) Air Horn (Up to 1/2 mile)
    • 4) Underwater Signaling device
  • Inflator integrated secondary air source
  • Signals both underwater and on the surface
  • The Air 3 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
  • Can be heard about 1/2 mile away
  • Alert, Inflation and Air-release buttons
  • Compatible with all BC's except by Aeris, Aqua-Lung, Cressi, Dacor, Oceanic, SeaQuest, TUSA models with the A.P.A. Active Purge Assist inflator system, US Divers and XS Scuba
  • FULL MANUFACTURER'S WARRANTY

And the reviews are in:
"You need to do some serious stremlining.
The Air-3 is a good place to start with the bonus
of surface and underwater signalling" -California Diving News




Divers Tool Master $19.95

Deluxe Regulator Dive Bag $71.50

Polar Fleece Beanie $12.95

  Retail:
$199.95

You Pay:
$149.95

You Save:
$50.00

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Mfg Part Number :
GS060

Genesis S.K.O. Octo

Free Standard Shipping

 



  • The ultimate in small octos
  • Streamline flat design
  • Stows perfectly in BCD pocket
  • Tuned to resist unwanted freeflows
  • Bright "hi viz" yellow accents for easy identification
  • FULL MANUFACTURER'S WARRANTY
Yellow



Divers Tool Master $19.95

Deluxe Regulator Dive Bag $71.50

Polar Fleece Beanie $12.95

  Retail:
$115.00

You Pay:
$72.95

You Save:
$42.05

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Genesis Atlas Standard Octo GS040 035155

Mfg Part Number :
GS040

Genesis Atlas Standard Octo

Free Standard Shipping

 



  • Hi-Viz yellow face cover
  • Simple to maintain
  • Precision - ground stainless steel cam and Delrin lever for smooth effortless breathing
  • High impact housing for rugged applications
  • FULL MANUFACTURER’S WARRANTY
Yellow



Divers Tool Master $19.95

Deluxe Regulator Dive Bag $71.50

Polar Fleece Beanie $12.95

  Retail:
$125.00

You Pay:
$72.95

You Save:
$52.05

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