Call our certified SCUBA Instructors

1.800.34.SCUBA

8AM - 6PM PST

  
Use the scroll bar on the right to scroll down and see more products »

>

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)
Sort By:   Popularity   |   Manufacturer   |   Price   |   Customer Reviews
Page 2 of 4
Pages:
<
1
2
3
4
>
Items per page


Mfg Part Number :
SR9000

Sherwood Gemini Breathable Inflator  

Free Standard Shipping

Sherwood Gemini Breathable Inflator Customer reviews

Scuba Lab Best Buy!
  • Nitrox compatible to 40% (The recreational limits of Nitrox)
  • Dive with one less hose
  • Inflator integrated secondary air source
  • Bright "hi viz" yellow accents for easy identification
  • Convenient, fixed location
  • The Gemini 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, Hollis, Oceanic, SeaQuest, TUSA models with the A.P.A. Active Purge Assist inflator system, US Divers and XS Scuba
  • LIFETIME MANUFACTURER'S PARTS WARRANTY
    NEVER PAY FOR PARTS

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



Divers Tool Master $19.95

Polar Fleece Beanie $6.95

Scuba Divers Duffel Bag $39.95

   Retail:
$210.00

You Pay:
$199.95

You Save:
$10.05

ask an expert



Mfg Part Number :
RAS2S

H2O RAS2 Redundant Pony Bottle System  

H2O RAS2 Redundant Pony Bottle System Customer reviews

  • Station Filler included
  • Works with any cylinder that accepts a standard 3/4 inch o-ring valve
  • Nitrox Compatible to 40% (The Recreational Limits of Nitrox)
  • Bright "Hi-Viz" neon yellow cover
  • Low pressure quick disconnect allows easy detachment of 2nd stage and hose from 1st stage
  • FULL MANUFACTURER'S WARRANTY

     

    *Shipping Surcharge (In ADDITION to your normal shipping charges)
      13 Cubic Foot tank Only
    • Ground Shipping Surcharge: $4.95
    • ThreeDay Shipping Surcharge $11.95
    • NextDay Shipping Surcharge $24.95
UPGRADES:
Sherwood 6 Cubic Foot Aluminum Tank ADD $85.00
Sherwood 13 Cubic Foot Aluminum Tank ADD $95.00
Options: 



H2O RAS 13 Cubic Foot Pony BottleTank Ba $10.95

Deluxe Regulator Dive Bag $71.50

Polar Fleece Beanie $6.95

   $356.95

ask an expert



Mfg Part Number :
116920

Aqua Lung ABS Octo  

Free Standard Shipping



Scuba Lab Testers Choice!
  • 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
  • Streamline flat design
  • 39" Hi-Viz neon yellow hose
  • FULL MANUFACTURER’S WARRANTY
UPGRADES:
Aqua Lung. Legend Regulator Bag ADD $47.00
Options: 



Divers Tool Master $19.95

Scuba Equipment Care & Maintenance Book $19.95

Octo Holder $5.95

   $145.00

ask an expert



Mfg Part Number :
128140

Aqua Lung Titan LX Octo  

Free Standard Shipping



UPGRADES:
Scubamax Octo Holder.. ADD $5.95
Options: 



Comfo-bite Silicone Scuba Regulator Mouthpiece $9.95

Molokini Regulator Bag $64.95

Scuba Tool Master $19.95

   $220.00

ask an expert



Mfg Part Number :
02-0115-3P

Atomic B2 Octo  

Free Standard Shipping



UPGRADES:
Atomic Deluxe Regulator Bag ADD $71.50
Options: 



Scuba Tool Master $19.95

Innovative Octo Holder $5.95

Deluxe Diver Tool And Repair Kit $34.95

   $430.00

ask an expert



Mfg Part Number :
416893

Mares Alt Air Control Integrated Octo  

Free Standard Shipping

Mares Alt Air Control Integrated Octo Customer 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 $12.95

Deluxe Regulator Dive Bag $71.50

Scuba Tool Master $19.95

   Retail:
$240.00

You Pay:
$224.95

You Save:
$15.05

ask an expert



Mfg Part Number :
AP0756

Apeks Egress Octo  

Free Standard Shipping



  • Nitrox Compatible to 40% (The Recreational Limits of Nitrox)
  • Rugged, reliable and affordable
  • Exceptional breathing performance
  • Streamline flat design
  • Bright "Hi-Viz" yellow hose and 2nd stage cover for easy identification
  • 36" Hi-Viz neon yellow hose
  •  LIFETIME MANUFACTURER'S PARTS WARRANTY
    NEVER PAY FOR PARTS
UPGRADES:
Aqua Lung. Traveler 70 Regulator Bag ADD $34.00
Options: 



Scubamax Octo Holder $5.95

Scuba Equipment Care & Maintenance Book $19.95

Scuba Tool Master $19.95

   $185.00

ask an expert



Mfg Part Number :
30.0216

Aeris A2 Maxflex Octo  

Free Standard Shipping



  • Brand new & completely redesigned
    Not like most other sites that sell the old discontinued model
  • MaxFlex hose - lightweight, flexible, double braided hose designed to
    outperform and outlive traditional rubber hoses
  • Nitrox compatible to 40% (The recreational limits of Nitrox)
  • Lightweight design
  • Orthodontic mouthpiece
  • Specifically tuned to resist unwanted freeflow
  • Yellow accents for easy identification
  • LIFETIME MANUFACTURER'S PARTS WARRANTY
    NEVER PAY FOR PARTS
UPGRADES:
Scuba Deluxe Round Protective Regulator Bag ADD $29.95
Options: 



Divers Tool Master $19.95

Octo Holder $5.95

Polar Fleece Beanie $6.95

   Retail:
$135.95

You Pay:
$129.95

You Save:
$6.00

ask an expert



Mfg Part Number :
EAS2S

H2O Extra Air Source Pony Bottle Regulator-2nd Generation  



Every Extra Air Source we sell comes complete with:

  • Completely new & redesigned 2nd Generation!
    - not like most other sites that sell the discontinued old 1st Generation model
  • Station filler assembly included
  • On/Off valve allows for worry free storage
  • Extra low pressure and high pressure ports
  • 2nd stage has dual silicone exhaust valves which directs bubbles away from mask
  • Diver Air "On" and "Off" Switch
  • High grade silicone mouthpiece
  • 1st stage has vertical and horizontal swivel
  • Tank not included as pictured- (See below to order)
  • FULL MANUFACTURER'S WARRANTY

For the complete Scuba Lab review - Click Here!

UPGRADES:
Sherwood 6 Cubic Foot Aluminum Tank ADD $85.00
Sherwood 13 Cubic Foot Aluminum Tank ADD $95.00
Sherwood 19 Cubic Foot Aluminum Tank ADD $105.00
Options: 



Divers Tool Master $19.95

RAS Pony BottleTank Bag $12.95

Pony Bottle Pressure Gauge $19.95

   Retail:
$282.95

You Pay:
$269.25

You Save:
$13.70

ask an expert



Mfg Part Number :
170PKX

Submersible Systems 1.7 Cubic Foot Air Xtreme  



  • Free "hands free" neoprene vest included!
  • Free Ballistic Carry Bag included
  • Light weight and compact, only 2 lbs
  • Great for kayakers, surfers and extreme sport enthusiasts-Not for Scuba Diving or Snorkeling
  • Simply put the Spare Air in your mouth and breathe
  • 1.7 CF - 30 Breaths at the surface
  • MAX PRESSURE: 3000 psi
  • Fill adapter not included - see below to order
  • FULL MANUFACTURER'S WARRANTY
UPGRADES:
Submersible Systems Spare Air Yoke Refill Adapter ADD $44.95
Options: 



Neoprene Vest with Mouthpiece Cover $79.95

Spare Air Travel Pack $15.96

Scuba Beach Towel $9.95

   $274.95

ask an expert



Mfg Part Number :
416535

Mares Carbon Octo  

Free Standard Shipping



  • Mares New "Top of the Line" Octopus
  • Lightweight carbon second stage - 65% lighter than a metal second stage
  • Nitrox compatible to 40% (the recreational limits of nitrox)
  • VAD (Vortex Assisted Design) by-pass system for effortless, natural breathing under all conditions
  • Maximum thermal conductivity-unbeatable performance and reliability in extremely cold water, even ice diving
  • Orthodontic mouthpiece for added comfort
  • “Superflex” hose incorporates exceptional softness and is also extremely
    light weight to guarantee the maximum freedom of movement
  • Specially designed mesh grid 2nd stage cover to prevent unwanted free-flow even in the strongest currents
  • Bright "Hi-Viz" yellow hose and 2nd stage cover for easy identification
  • High performance in all temperature extremes - even ice diving!
  • FULL MANUFACTURER’S WARRANTY
UPGRADES:
Mares Cruise Regulator Bag Regulator Bag ADD $23.95
Options: 



Octo Holder $5.95

Divers Tool Master $19.95

Scuba Divers Duffel Bag $39.95

   Retail:
$450.00

You Pay:
$424.95

You Save:
$25.05

ask an expert



Mfg Part Number :
RG300YL

XS Scuba Altair Octo  

Free Standard Shipping

XS Scuba Altair Octo Customer reviews

UPGRADES:
Scuba Deluxe Round Protective Regulator Bag ADD $29.95
Options: 



Scuba Equipment Care & Maintenance Book $19.95

Divers Tool Master $19.95

Save A Dive Kit $19.95

   $99.95

ask an expert



Mfg Part Number :
IR-3

TUSA Duo-Air  

Free Standard Shipping

TUSA Duo-Air Customer 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 - will NOT fit BC's made 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

Scuba Divers Duffel Bag $39.95

   Retail:
$220.00

You Pay:
$199.95

You Save:
$20.05

ask an expert



Mfg Part Number :
-

TUSA ´´Used-Demo´´ Duo-Air  



  • 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 - will NOT fit BC's made 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

Scuba Divers Duffel Bag $39.95

   Retail:
$220.00

You Pay:
$130.00

You Save:
$90.00

ask an expert



Mfg Part Number :
RB-2200

Innovative Octo Holder  

Innovative Octo Holder Customer reviews

Options: 



Locking Retractor with Snap $27.99

Finger Spool $24.95

Akona Snap Adaptor (Female) $6.50

   $7.95

ask an expert



Mfg Part Number :
957-002

Submersible Systems Covered Holster with Molle Attachment  



Black 3.0 CF



Heed 3 Egress Device $299.00

Spare Air Travel Pack $15.96

Mini Pressure Gauge For Spare Air $49.95

   $58.00

ask an expert



Mfg Part Number :
974

Submersible Systems Neoprene Vest with Mouthpiece Cover  



  • Free Lanyard included
  • Great for kayakers, surfers and extreme sport enthusiasts - Not for Scuba Diving or Snorkeling
  • Simply put the Spare Air in your mouth and breathe
  • Holds 1.0 and 1.7 cubic foot Spare Air units (not included)
  • Adjustable velcro panels
  • One Size Fits All
  • FULL MANUFACTURER'S WARRANTY
UPGRADES:
Submersible Systems Spare Air Pack 1.7 CF ADD $259.99
Options: 



Spare Air Pack $259.99

Spare Air Travel Pack $15.96

Polar Fleece Beanie $6.95

   $79.95

ask an expert



Mfg Part Number :
RAS1

H2O RAS 1 Redundant Air System  



  • Station Filler included
  • This system uses the reliable RG2V 1st stage &RXS style 2nd stage
  • Durable high performance regulator
  • Exhaust bubbles are vented to the side, not in the divers face
  • Low pressure quick disconnect allows easy detachment of 2nd stage and hose from 1st stage
  • Balanced 1st stage with built-in swivel to reduces jaw fatigue
  • Features: 2 high pressure and 4 low pressure ports
  • Tank not included- (See below to order)
  • FULL MANUFACTURER'S WARRANTY

*Shipping Surcharge (In ADDITION to your normal shipping charges)When Upgrading to 13, 19 and 30Cf Tanks

  • Ground Shipping Surcharge: $20.95
  • ThreeDay Shipping Surcharge $36.95
  • NextDay Shipping Surcharge $60.95
  • Next Day AM or Next Saturday AM Shipping Surcharge: $68.95
UPGRADES:
Sherwood 6 Cubic Foot Aluminum Tank ADD $85.00
Sherwood 13 Cubic Foot Aluminum Tank ADD $95.00
Sherwood 19 Cubic Foot Aluminum Tank ADD $105.00
Sherwood 30 Cubic Foot Aluminum Tank ADD $115.00
Options: 



Deluxe Regulator Dive Bag $71.50

19 Cubic Foot RAS Pony BottleTank Bag $12.95

Pony Bottle Pressure Gauge $59.95

   $275.95

ask an expert



Mfg Part Number :
AA0025

Apeks AT20 Octo  

Free Standard Shipping



UPGRADES:
Scuba Deluxe Round Protective Regulator Bag ADD $29.95
Options: 



Breakaway Octo Holder $5.95

Scuba Equipment Care & Maintenance Book $19.95

Scuba Tool Master $19.95

   $180.00

ask an expert



Mfg Part Number :
02-0105-3P

Atomic M1 Monel Octo  

Free Standard Shipping



Scuba Lab Testers Choice!

And the reviews are in:
"…this reg turned in Excellent performance on the breathing simulator, earning perfect work of breathing scores when subjected to our standard reg tests." - Scuba Lab

UPGRADES:
Atomic Deluxe Regulator Bag ADD $71.50
Options: 



Scuba Tool Master $19.95

Octo Holder $5.95

Deluxe Diver Tool And Repair Kit $34.95

   $350.00

ask an expert



Mfg Part Number :
O20

IST Octo  



UPGRADES:
Scuba Deluxe Round Protective Regulator Bag ADD $29.95
Options: 



Divers Tool Master $19.95

Octo Holder $5.95

Polar Fleece Beanie $6.95

   $110.95

ask an expert



Mfg Part Number :
AP0385M

Apeks Flight Octo  

Free Standard Shipping



  • Compact and lightweight 2nd stage
  • Nitrox Compatible to 40% (The Recreational Limits of Nitrox)
  • "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
  • Large Purge button
  •  LIFETIME MANUFACTURER'S PARTS WARRANTY
    NEVER PAY FOR PARTS
UPGRADES:
Scuba Deluxe Round Protective Regulator Bag ADD $29.95
Options: 



Scuba Equipment Care & Maintenance Book $19.95

Octo Holder $5.95

Divers Tool Master $19.95

   $265.00

ask an expert



Mfg Part Number :
320-8110

Zeagle Z Octo  

Free Standard Shipping



UPGRADES:
Scuba Deluxe Round Protective Regulator Bag ADD $29.95
Options: 



Octo Holder $5.95

Scuba Console Protection Sleeve $9.95

Divers Tool Master $19.95

   Retail:
$256.00

You Pay:
$239.95

You Save:
$16.05

ask an expert



Mfg Part Number :
8450

Seac Synchro Octo  



  • 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 Octo Holder $5.95

Scuba Equipment Care & Maintenance Book $19.95

   $135.00

ask an expert

Page 2 of 4
Pages:
<
1
2
3
4
>
Items per page