Redundant Air Systems

Catalina Pony Bottle Tanks with Pro Valve

70 reviews

SKU: AQUTP30BR

~~$254.95~~ Save: $41 (16%)

^$213.95

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In Stock

DESCRIPTION

A reliable, nitrox-ready aluminum pony tank with high flow capacity valve and convertible K-valve.

Pros

Perfect size for various needs
Sufficient air capacity
Economical price
Reliable backup option
Versatile for different diving scenarios

XS Scuba Pony Bag

14 reviews

SKU: XSSPBB19

^$27

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In Stock

DESCRIPTION

A sturdy and secure pony bag with self-draining mesh bottom, ideal for connecting to primary diving cylinder.

Spare-Air 3000 Kit

10 reviews

SKU: SX27B

^$299.99

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In Stock

DESCRIPTION

A reliable and compact backup air supply kit for emergency out-of-air situations during diving, available in multiple sizes and colors.

Scubapro Luna 2.0 Air Integrated Computer

6 reviews

SKU: SCPL2AIC

^$499

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In Stock

DESCRIPTION

A wireless air-integrated computer with customizable settings, a modern display, and intuitive interface.

H2Odyssey Quick Release EAS Bag for 6-cu. ft. Tank

6 reviews

SKU: H2EASB6

~~$11.95~~ Save: $4.00 (33%)

^$7.95

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In Stock

DESCRIPTION

A durable nylon bag that securely holds a 6 cu ft cylinder for easy accessibility.

H2Odyssey Extra Air Source Yoke Filler Adapter

2 reviews

SKU: H2EASYFA

^$46.95

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In Stock

DESCRIPTION

A durable chrome plated adapter that allows for easy filling off of a standard yoke valve.

Thunderbird 40 cu. Ft Aluminum Tank with Pro valve

2 reviews

SKU: MTLTA40BR

^$264.95

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In Stock

DESCRIPTION

A corrosion-resistant aluminum tank with a convertible valve, suitable for nitrox diving up to 40%.

Spare-Air Nitrox Kit

SKU: SX27NB

^$319.99

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In Stock

DESCRIPTION

A redundant alternate nitrox gas source that allows for self-rescue in emergency situations.

Dive Rite Rec XT Wing Dual Bladder

SKU: DIV5300D

^$670

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In Stock

DESCRIPTION

A Dive Rite Rec XT Wing with dual bladder for two 85 cubic feet tanks, made of durable technical fabric.

Thunderbird 13 cu. ft Aluminum Tank with Pro Valve

SKU: MTLTA13BR

^$194.95

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In Stock

DESCRIPTION

A 13 cu. ft aluminum tank with Pro Valve, Nitrox ready up to 40%, corrosion-resistant and convertible.

Scubapro Air 2, Combination Octopus/Inflator Regulator

49 reviews

SKU: SCPA2GYR

^$329

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In Stock

DESCRIPTION

A durable and versatile combination octopus/inflator regulator with easy-to-use features and a classic design.

Pros

Breathability
Reduces clutter and eliminates hoses
Convenient and practical
Combination of octopus and inflator
Streamlined design

Atomic Aquatics Safe Second Inflator (SS1), Stainless Steel

34 reviews

SKU: ATMSS1SBL

^$449.95

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In Stock

DESCRIPTION

A streamlined stainless steel inflator with high flow 2nd stage and easy single hand operation.

Pros

Convenient
No leaks
Streamlined setup
Easy breathing at depth
Versatility

Mares Prestige 15X and Prestige Octopus Package

32 reviews

SKU: MRSPKPRGY

~~$619.90~~ Save: $170.90 (28%)

^$449

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In Stock

DESCRIPTION

A lightweight Mares regulator package with diaphragm first-stage, 4 LP ports, and 2 HP ports.

Suunto Transmitter Only for Air Integrated Wrist Computers

29 reviews

SKU: SQTVTCT

~~$399~~ Save: $30 (8%)

^$369

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In Stock

DESCRIPTION

A streamlined transmitter for air-integrated wrist computers with easy installation and unique functions.

Pros

Convenient air integration
Helpful customer service
Easy installation and setup
Seamless syncing
Reliable performance

Tank to Tank Equalizer with Pressure Gauge

11 reviews

SKU: AQUTTED

^$169.95

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In Stock

DESCRIPTION

A chrome-plated brass Tank to Tank Equalizer with Pressure Gauge for maximizing air availability and easy equalizing of cylinders.

Tusa SS-0002 Duo Air II Alternate Combo Inflator

10 reviews

SKU: TBTSS02

^$299

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In Stock

DESCRIPTION

A combination octopus regulator/power inflator with an air balanced power inflator valve and classic downstream regulator valve.

Cressi XS2/AC2 Regulator and XS Octopus Package

9 reviews

SKU: PCKXS2

~~$344.90~~ Save: $94.91 (28%)

^$249.99

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In Stock

DESCRIPTION

A lightweight, high-performance regulator and octopus package with a non-balanced flow-by piston design.

Scubapro MK25 EVO/S620Ti Dive Regulator System

9 reviews

SKU: SCPM25ES620

^$1249

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In Stock

DESCRIPTION

A high-performance regulator set with a balanced piston first stage and adjustable inhalation control.

Scubapro Aladin H (Matrix) Computer W/Quick Release Hose

7 reviews

SKU: UTCAHM

^$789

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In Stock

DESCRIPTION

A compact and intuitive dive computer with a digital compass and multi-gas algorithm.

Aqualung Airsource Complete

6 reviews

SKU: UDRAS3QD

^$279

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In Stock

DESCRIPTION

A pneumatically balanced octopus and BCD inflator combo with soft-touch purge cover and rapid-exhaust valve.

Blue Reef Cross-Over Equalizer

6 reviews

SKU: AQUTCED

~~$169.95~~ Save: $55.00 (32%)

^$114.95

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In Stock

DESCRIPTION

A blue tank accessory with chrome plated brass fittings that maximizes air availability and is equipped with bleeder valves.

Scubapro MK25 EVO/A700 Dive Regulator System

6 reviews

SKU: SCPM25EA70

^$1299

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In Stock

DESCRIPTION

A high-performance regulator set with customizable breathing options and enhanced cold-water diving capabilities.

Air Line Scuba Tank Regulator Hose Assembly

5 reviews

SKU: ALHHOS40

^$180

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In Stock

DESCRIPTION

A deck mount air supply alternative for scuba diving, with solid-brass, nickel-plated fittings.

Scubapro MK25 EVO/A700 Carbon BT Yoke Dive Regulator System

3 reviews

SKU: SCPM25EA7CB

^$1799

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In Stock

DESCRIPTION

A durable and sleek black regulator with adjustable 2nd stage and enhanced cold-water diving capabilities.

OTS Spectrum Ambient Breathing Valve (ABV)

3 reviews

SKU: OTSSABV

^$139

+ wishlist

In Stock

DESCRIPTION

A simple and efficient breathing valve that allows you to breathe ambient air at the surface while conserving tank air.

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Redundant Air Systems

Redundant air systems are a cornerstone of dive safety, offering peace of mind and an extra layer of protection for divers who want to ensure every underwater adventure ends safely at the surface. These systems, which include completely separate air supplies and delivery mechanisms, are engineered to function independently from a diver’s primary tank and regulator. Their importance becomes especially clear in scenarios where a primary air source might fail—whether due to equipment malfunction, entanglement, or unforeseen underwater incidents. Seasoned divers often recall stories from their training or real-world dives where redundancy made all the difference: a pony bottle tucked neatly alongside the main cylinder, or a compact backup regulator clipped and ready for immediate deployment, transforming a potentially hazardous situation into a controlled and calm ascent. For those venturing into deeper or more complex dive environments, such as wrecks, caverns, or cold-water sites where equipment is put to the test, a redundant air system is not just a recommendation—it's a vital component of responsible dive planning.

When considering which redundant air system best fits your needs, it’s important to reflect on your dive profile, experience level, and the environments you frequent. Recreational divers exploring local reefs in the warmth of July might favor smaller, easily mounted backup cylinders that provide just enough air for a safe ascent from moderate depths. Technical divers, on the other hand, often opt for backmounted doubles with isolation manifolds, allowing seamless access to gas from either cylinder and supporting the longer, deeper, or more demanding dives that summer often inspires. For travel divers or those who value minimalism, compact self-contained units offer a lightweight solution that’s always within reach, though they provide a more limited air supply. Maintenance and training are just as important as the equipment itself—regular practice deploying your backup system and ensuring it’s fully serviced can make the difference in an emergency. Many divers share the ritual of checking both primary and redundant systems before every dive, a simple habit that fosters confidence and safety.

Redundant air systems also make thoughtful gifts for divers who are progressing in their training or exploring new types of diving. Gifting a backup air supply can symbolize a shared commitment to safety and adventure, whether for a family member preparing for their first drift dive or a buddy gearing up for a summer expedition to a favorite wreck site. The variety of systems available means there’s an option to suit every diver’s style and experience, from compact units for the casual explorer to robust setups for the technical enthusiast. As you browse our selection, consider the advantages of each configuration and how it aligns with your diving goals and local conditions. For those seeking to explore a more comprehensive range of options and learn about the different types of backup systems available, our dedicated page on Redundant Air Tanks provides in-depth information to help you make an informed decision. Investing in a redundant air system is a proactive step towards safer, more confident diving—ensuring every underwater experience is as secure and enjoyable as possible.

Top Picks For Redundant Air Systems