Aeris Air Link 40.9100 035019

Mfg Part #: 40.9100
Scuba Lab Best Buy!
  • Includes low pressure inflator hose 
  • Nitrox compatible to 40% (The recreational limits of Nitrox)
  • Replaces loose, hanging octo
  • Dive with one less hose
  • Convenient, fixed location
  • Inflator integrated secondary air source
  • 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 Aeris, Oceanic and XS Scuba BC's and all other 3/4 inch corrugated hose style BC's

Customer Reviews for Aeris Air Link:

See the top 20 most helpful scuba gear reviews

Average Customer Review: based on 17 reviews.

Rating: love it
Reviewer: Matthew B.  -  View all my reviews
cant be happier with this octo. breaths very easy and installs in minits. i bought just the lower unit but think i would get tho one with the hose next time. becaose the hose is oval shaped at the end and the dust cap dosent fit quite rite. other than that i love it.

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114 out of 222 people found this review helpful.

Rating: Why not combine the two?
Reviewer: Robert L.  -  View all my reviews
The Air Link is pretty much the same as my my old Oceanic Air XS. It eliminates the need for an octo, letting you feel a little more stream-lined. It performs solidly underwater and the inflator is easy to press and discharge. This octo/inflator fits only Aeris and Oceanic BCDs.

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237 out of 463 people found this review helpful.

Rating: octo
Reviewer: Robin Miller
seems to be fine

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34 out of 63 people found this review helpful.

Rating: Aeris Air Link
Reviewer: Dan Girouard
Does exactly what it is suppose to and works smoothly. Yahoo! one less hose attached to the 1st stage. Word of caution: this "octopus" is NOT designed for ice diving condition. Note that I had to get another corrugated hose from Oceanic to properly fit to my Seaquest Balance vest (different diameter). Really neat rig and a must for you "jacuzzi" warm water divers :) From "PenoFrostbite Dan" !!

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285 out of 542 people found this review helpful.

Rating: Lemon
Reviewer: Thomas S.  -  View all my reviews
This is my second Air Link. The first one got sent in 3 times before I finally just scrapped it for a new one. It is great to 130+ if it works. Is very easy to operate even with dry gloves on. SCUBA.COM was great in getting me a new one under warrenty. I recommend this product, just test it before you trust it.

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399 out of 866 people found this review helpful.

Rating: Coolest thing since sliced bread
Reviewer: Jodi Fisher
This should be standard equipment for all BCs. Get rid of your octo and have one of these installed onto your BC. Streamline your gear. Its easy to use and serves a dual purpose as both an inflator/deflator and as a backup air source. Its easy to use and handle. I love mine and I have no complaints. It may take a little time to get use to it, but use it when you dive to get a feel for it. Best piece of dive equipment that I have ever purchased. Worth every dollar!

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388 out of 817 people found this review helpful.

Rating: Great way to eliminate a hose!!
Reviewer: George M.  -  View all my reviews
When I got this piece of equipment I thought it would be cool to eliminate a hose. I just didn’t realize how cool it was going to be. I love the fact that I eliminated a hose, and just to make sure it worked properly my wife and I did an accent using the Aeris Air Link. We had no problems using the Air Link, I just gave her my reg, and I used the air link without any trouble. It also is the inflator, and deflator for my BCD I had no trouble here either. I would highly recommend this piece of equipment if you are looking to free up a little space, and have one less thing to worry about dragging on the bottom.

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550 out of 1069 people found this review helpful.

Rating: One less Hose!
Reviewer: Cory S.  -  View all my reviews
I was skeptical at first, but when I realized I had to replace my power inflator house, with a higher pressure one, I knew that it was well thought out. Now all I have is a regulator and my airlink, its great!

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578 out of 1123 people found this review helpful.

Rating: Great Product
Reviewer: Rob Bolton
This integrated octo is great. I have it installed on my Cressi Aqua Light BC with no problems. Worked well for inflating and deflating my BC. I like having my alternate air source right there easy to reach. Breathing from this regulator was just as easy as from my primary. Also a big plus to loose one hose from my regulator. I will purchasing another one for my other BC setup.

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466 out of 966 people found this review helpful.

Rating: change is good ... Aeris Air Link
Reviewer: DANIEL PARRISH  -  View all my reviews
the Aeris Air Link was my 1st experience with a "safe second" air source attached to a BCD. For over 20 years I had used a octopus regulator as my backup and wanted to try something different. I had seen several different makes similar to the Aeris but deceided to go with the Air Link because of 2 reasons ..... (1) the BC Ive been using for the past year is an Aeris ATMOS XT and adding the Air Link was quick and easy .... (2) the price of the Air Link was a few dollars cheaper than other brands. I MADE A GOOD CHOICE. The Air Link has worked well with no problems. I love not having that old "oct" hanging around catching on different things. I wished I had added the Air Link when I purchased my BC .....

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538 out of 1158 people found this review helpful.

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Questions and Answers for Aeris Air Link:

  • Ian:

    Hi, I am using Cressi Travel Light BCD and want to know if this Aeris Air Link will fit the inflator hose of my BCD, or if there is any other similar product that will fit. I want to get rid of my octo. Thanks. Ian

    Greg  (Certified Scuba Instructor at

    No, this will not work. I would recomment the inline style octo for the Cressi BCD. Look at the Airwave Plus Inline Scuba Octo from XS Scuba.

  • Rhoda:

    Hi, I am looking to replace my Aqualung Seaquest Air Source 1 (Original). Is this similar? Will this fit my BCD. What is a corrugated hose? Can I use the one that came with my old seaquest air source? Rhoda

    Bob  (Certified Scuba Instructor at

    This will only fit the Oceanic and Aeris bcds. For more information on products that will fit your bcd, please contact our instructors at

  • Rhoda:

    Would this be compatible with my Aqualung Seaquest Diva BCD?

    Bob  (Certified Scuba Instructor at


  • kevin:

    i am using the aeris bio jack bc with a round corrugated hose. If i upgrade to the aeris air link will i be able to use the current hose. it has approx 1 in at the end that is non corrugated and is 16inches, or do i need to buy the additional hose?

    Darrick  (Certified Scuba Instructor at

    Hello Kevin, yes this unit would replace your current power inflator.

Purge Button/Exhaust Valve

The 2nd stage's exhaust valve is a one-way valve that allows the diver's exhaled air to leave the regulator. Basically, it is where the bubbles exit the mouthpiece.

The purge button allows the diver to force air from his/her tank through the regulator to clear any water that may have inadvertently entered the 2nd stage. This button should be fairly simple to manipulate, even when wearing thick dive gloves. It should also only require the pressure from one finger to successfully perform the purge.


Your 2nd stage's mouthpiece is a more crucial piece of equipment than most people believe. A mouthpiece should be comfortable in your mouth; if it feels too big or too small, use a different size mouthpiece.

Pneumatically Balanced Second Stage
Virtually No Breathing Effort
Patented Dynamic Adjustment Automatically Maintains Inhalation Effort
Adjustable Venturi Switch for Dive/Pre-Dive Adjustment
Ultra-Flexible Braided MaxFlex Hose with Swivel
No Inline Swivel for Reduced Weight
Patented Orthodontic Mouthpiece with High Density Bite Tabs
ABS/Polycarbonate Composite Blend Construction

Dry Valve Technology (DVT)

DVT is a revolutionary regulator technology designed to automatically eliminate moisture and contaminants from entering your first stage, even if the dust cap is accidentally left off.

DVT eliminates corrosion of critical internal components, bacteria, hose deterioration, and damaged gauges and computers.

Pneumatically Balanced Valve

The pneumatically balanced second stage reduces breathing resistance to near zero with a balanced valve seat designed to respond to the slightest inhalation.

A pneumatically balanced second stage actually has (or can have) the same initial crack opening effort as a mechanically balanced, but the spring force of a pneumatically balanced second stage is lighter so it’s spring rate is also lower.

Diver Adjustable Inhalation Effort

A simple twist of the adjustment knob enables complete control...

Set the inhalation requirement to near zero when you need ultimate performance, or tune it for greater resistance as conditions or preferences change.

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