Redundant Breathing Systems For Scuba

Catalina Pony Bottle Tanks with Pro Valve

70 reviews

SKU: AQUTP40

~~$299.95~~ Save: $30 (10%)

^$269.95

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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.

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.

XS Scuba Alt Air Octopus

8 reviews

SKU: XSSAAOBK

^$97.95

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In Stock

DESCRIPTION

A classic downstream demand valve octopus with an intelligent in-line mouthpiece and Miflex hose.

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.

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.

Atomic Aquatics Safe Second Inflator (SS1), Titanium

4 reviews

SKU: ATMSS1T

^$519.95

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In Stock

DESCRIPTION

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

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.

Mares Dual 15X Regulator with Dual Octopus, Quad Ci Wrist Dive Computer and LED Tank Module 2.0 Transmitter

1 reviews

SKU: MRSD15XK4

~~$1629.80~~ Save: $679.85 (42%)

^$949.95

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In Stock

DESCRIPTION

A lightweight, high-performance diving set featuring techno-polymer construction, advanced air flow systems, and a color display.

Dive Rite O2 DECO Regulator

1 reviews

SKU: DIVRG5400

~~$349~~ Save: $69.80 (20%)

^$279.20

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In Stock

DESCRIPTION

A compact and lightweight DECO regulator with oxygen-compatible materials and advanced performance.

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.

Blue Steel Inline Re-Breather Valve

1 reviews

SKU: FBRRVB

~~$84.95~~ Save: $25 (29%)

^$59.95

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In Stock

DESCRIPTION

A low profile, blue inline re-breather valve with easy hand wheel access and a built-in "Bump Guard" for added safety.

Thunderbird 19 cu. ft Aluminum Tank with Pro Valve

1 reviews

SKU: MTLTA19YL

~~$229.95~~ Save: $30 (13%)

^$199.95

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In Stock

DESCRIPTION

A corrosion-resistant 19 cu. ft aluminum tank with Pro Valve, Nitrox ready up to 40%.

Aqualung Leg3nd MBS Regulator with Legend Octopus

SKU: UDRLMYOP

~~$1418~~ Save: $159 (11%)

^$1259

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In Stock

DESCRIPTION

A revolutionary Aqualung regulator with MBS and superior cold-water functionality, paired with a balanced octopus.

Thunderbird 13 cu. ft Aluminum Tank with Pro Valve

SKU: MTLTA13BR

~~$189.95~~ Save: $20 (11%)

^$169.95

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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.

Interspiro Divator RS4 4-Port Regulator, No Gauge

SKU: INSDR4PGD

^$1048

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In Stock

DESCRIPTION

A high-performance regulator with four low-pressure ports, shockproof rubber cover, and stable intermediate pressure.

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.

Aqualung Leg3nd MBS Regulator

2 reviews

SKU: UDRLMYD

^$1099

+ wishlist

In Stock

DESCRIPTION

A high-performing and easy-to-use regulator with adjustable 2nd stage and exceptional cold-water performance.

Highland Vortex Octopus

SKU: XSSRGH650

^$247.95

+ wishlist

In Stock

DESCRIPTION

A pneumatically balanced, freeze-resistant backup regulator with a yellow Miflex hose for high-visibility and smooth airflow.

XS Scuba MultiMax Breathable Inflator

SKU: XSSRG370

^$263.95

+ wishlist

In Stock

DESCRIPTION

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

Cressi Octopus Zen Pro

SKU: CRBZOCP

^$199.95

+ wishlist

In Stock

DESCRIPTION

A high-visibility yellow backup regulator with thermoconductive polymer for reliable cold water scuba performance.

Sherwood SR3 Octopus

SKU: SWDSOR

^$300

+ wishlist

In Stock

DESCRIPTION

A high-visibility yellow octopus regulator with advanced technology and SSFC for reliable, effortless emergency breathing.

Shearwater Peregrine TX Console Complete - PSI

SKU: SWTPDCTXCN

^$895

+ wishlist

In Stock

DESCRIPTION

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

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Redundant Breathing Systems For Scuba

Redundant breathing systems have become an essential consideration for divers seeking an additional layer of safety and self-reliance, especially as underwater adventures grow more ambitious and varied with the arrival of warmer weather. Whether you’re planning a solo exploration, venturing deeper to photograph marine life, or simply want extra peace of mind during drift dives where currents can separate buddies, these systems offer a dedicated, independent air source that stands apart from traditional buddy-breathing techniques. The core idea is simple: a redundant breathing system—whether a compact handheld mini-cylinder, a pony bottle, or a more technical setup like independent doubles or a rebreather—ensures you always have access to a backup air supply if your primary system fails. The freedom this brings is palpable; there’s a unique confidence that comes from knowing you can calmly manage unexpected equipment issues or air supply miscalculations, even if you’re momentarily separated from your dive group or buddy. This is especially valuable during the late spring and summer months, when dive sites become busier and conditions can change quickly, making self-sufficiency a prized asset.

Selecting the right redundant breathing system involves considering your typical dive profiles, experience level, and the environments you plan to explore. Recreational divers who stick to shallower reefs or local lakes might gravitate toward lightweight, handheld mini-cylinders that clip easily to a buoyancy compensator, providing just enough air for a safe, controlled ascent. These are popular among traveling divers and those who prefer minimal gear, as they’re compact and straightforward to operate. For those venturing deeper or engaging in technical dives—where extended bottom times and safety stops are routine—a larger pony bottle or twinset offers significantly more reserve air, along with the ability to carry independent regulators and gauges. These setups can be slung at your side or mounted to your primary tank, and are often favored by instructors, divemasters, and anyone tasked with group safety. Meanwhile, rebreather divers benefit from built-in redundancies, including backup electronics and bailout systems, which are crucial for the complex demands of closed-circuit diving. No matter which system you choose, proper training is non-negotiable. Many agencies offer specialized courses focused on self-reliant diving and redundant air management, ensuring you’re confident in both the selection and deployment of your backup system. These systems also make thoughtful gifts for experienced divers looking to expand their capabilities, or for those who are completing advanced certifications and want to invest in gear that supports their growing independence underwater.

As you browse through our curated list of redundant breathing systems, keep in mind the importance of matching your equipment to your diving goals and personal comfort. The right setup can make all the difference, whether you’re navigating a kelp forest, investigating a wreck, or simply enjoying a leisurely reef dive with friends. Investing in a redundant air source isn’t just about safety—it’s about unlocking new possibilities, extending your range, and diving with the assurance that you’re prepared for the unexpected. For a comprehensive overview of the different types of redundant systems available and further guidance on making the best choice for your needs, visit our Diving Redundant Systems page. Here you’ll find detailed information to help you compare options and make an informed decision, so you can enjoy every dive with confidence, from the first splash of spring to the last adventures of late summer.