Redundant Air Systems

Thunderbird 13 cu. ft Aluminum Tank with Pro Valve

SKU: MTLTA13YL

~~$194.95~~ Save: $19 (10%)

^$175.95

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In Stock

DESCRIPTION

A corrosion-resistant aluminum tank with a convertible valve and easy-grip rubber hand-wheel. Nitrox ready.

Catalina Pony Bottle Tanks with Pro Valve

70 reviews

SKU: AQUTP30BR

~~$264.95~~ Save: $28 (11%)

^$236.95

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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: SX6B

^$389.99

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In Stock

DESCRIPTION

A completely redundant alternate air source kit that allows self-rescue in emergency out-of-air situations.

Scubapro Luna 2.0 Air Integrated Computer

7 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.

Thunderbird 40 cu. Ft Aluminum Tank with Pro valve

2 reviews

SKU: MTLTA40BR

~~$299.95~~ Save: $70 (23%)

^$229.95

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In Stock

DESCRIPTION

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

H2Odyssey Extra Air Source Yoke Filler Adapter

2 reviews

SKU: H2EASYFA

^$54.95

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In Stock

DESCRIPTION

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

Thunderbird 19 cu. ft Aluminum Tank with Pro Valve

1 reviews

SKU: MTLTA19BR

~~$219.95~~ Save: $26.96 (12%)

^$192.99

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In Stock

DESCRIPTION

A corrosion-resistant aluminum tank with convertible valve options and nitrox readiness up to 40%.

Thunderbird 30 cu. ft Aluminum Tank with Pro valve

1 reviews

SKU: MTLTA30YL

~~$269.95~~ Save: $35 (13%)

^$234.95

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In Stock

DESCRIPTION

A corrosion-resistant aluminum tank with Pro valve, convertible to K valve, Yoke or DIN.

Spare-Air Nitrox Kit

SKU: SX27NB6

^$409.99

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In Stock

DESCRIPTION

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

XS Scuba MultiMax Breathable Inflator

SKU: XSSRG370

^$263.95

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In Stock

DESCRIPTION

A lightweight, streamlined breathable inflator that increases safety in out-of-air emergencies and eliminates the need for a backup-regulator.

Shearwater Peregrine TX Console Complete - PSI

SKU: SWTPDCTXCN

^$895

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In Stock

DESCRIPTION

An advanced, air-integrated dive console with a full-color LCD, digital compass, and rugged ballistic nylon polymer case.

Omni Swivel MB-X2 1 to 2 High Pressure Port Y Block Adapter

SKU: OSMBX2

~~$99.95~~ Save: $19.96 (20%)

^$79.99

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In Stock

DESCRIPTION

A durable, compact Y block adapter that splits one high-pressure port into two for gauges or transmitters.

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

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.

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

+ wishlist

In Stock

DESCRIPTION

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

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.

Cressi AC2/XS2 Regulator & XS2 Octo Package

9 reviews

SKU: PCKXS2

~~$344.90~~ Save: $94.90 (28%)

^$250

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In Stock

DESCRIPTION

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

Aqualung Airsource Complete

6 reviews

SKU: UDRAS3QD

^$279

+ wishlist

In Stock

DESCRIPTION

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

Scubapro MK25 EVO/A700 Dive Regulator System

6 reviews

SKU: SCPM25EA70

^$1299

+ wishlist

In Stock

DESCRIPTION

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

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/G260 Dive Regulator System

4 reviews

SKU: SCPM25EG26

^$1049

+ wishlist

In Stock

DESCRIPTION

A high-performance regulator set with adjustable 2nd stage, 5 LP ports, and enhanced freezing resistance.

Atomic Aquatics Safe Second Inflator (SS1), Titanium

4 reviews

SKU: ATMSS1T

^$519.95

+ wishlist

In Stock

DESCRIPTION

A streamlined titanium inflator with high flow 2nd stage and oversized buttons for easy single hand operation.

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Redundant Air Systems

When considering the right redundant air supply for scuba diving, it’s important to understand how these systems add an extra layer of safety and confidence beneath the surface. Unlike a simple alternate air source, a true redundant air system is entirely independent, featuring its own cylinder, regulator, and pressure gauge. This separation means that in the unlikely event of a primary system failure, divers have immediate access to a backup air source, which can be a vital lifeline in challenging environments. Redundant air supply scuba setups are especially valued by those who venture into overhead environments like wrecks, caverns, or caves, where a direct ascent to the surface may not be possible. Solo divers, sidemount enthusiasts, and anyone exploring greater depths or more complex dive profiles often rely on these systems to enhance self-reliance and overall safety. The peace of mind that comes from knowing you have a completely separate air source cannot be overstated, especially when exploring unfamiliar or demanding underwater terrain.

As the water warms up in May and dive season kicks into full swing, many divers start to plan more ambitious dives, making now an ideal time to review and upgrade your safety equipment. Redundant air systems come in several forms, from compact handheld canisters that slip neatly into a BC pocket to larger pony bottles that can be mounted alongside your primary tank. These options cater to a range of needs: a small, lightweight aav system is perfect for recreational divers who want an unobtrusive backup, while a larger redundant air supply is often preferred for technical dives, sidemount diving, or when using a diving twinset. The choice depends on your dive style, the environments you frequent, and your comfort with carrying additional gear. Maintenance is straightforward but essential; both the cylinder and regulator require regular servicing, and filling these tanks is as simple as visiting your local dive shop. For those who travel or dive solo, a redundant system is not just a piece of gear—it’s a trusted companion that quietly supports every underwater adventure.

Choosing a redundant air supply can also make a thoughtful and practical gift for the diver in your life, especially for those who are advancing their training or exploring new types of dives. Whether it’s for a friend gearing up for their first wreck penetration or a family member who enjoys the freedom of sidemount diving, a redundant air system is a gift that demonstrates genuine care for their safety and enjoyment. Many divers recall the first time they carried a backup tank, feeling the reassuring weight of self-sufficiency as they descended into the blue. It’s an experience that transforms how you approach each dive, allowing you to focus more on the wonders around you and less on what might go wrong. For a closer look at the different types of backup systems and to find the right fit for your diving needs, explore our dedicated page on Redundant Air Tanks. Here, you’ll find a curated selection designed to support divers at every experience level, from weekend explorers to seasoned technical divers preparing for their next big adventure.