Open Box Atomic Aquatics B2 Regulator

Atomic | SKU: AT-03-0027-3P+OB

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⚠️ FINAL SALE - NO REFUNDS

$775.95 $969.95

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Type

Yoke Din Yoke Sealed Din Sealed

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Condition Note

May be missing original packaging and minor blemishes (not noticeable after 1-2 dives). This product does not carry a valid manufacturer warranty.

Product Conditions

Open Box: This product is Open Box. It is generally unused, either returned by a customer or displayed in our showroom, and may have minor, unnoticeable blemishes. Original packaging may be damaged or missing.

Description

Our most popular regulator, the Atomic B2 system combines the signature second stage design and materials of the T3 with a Chrome-plated Brass first stage. The result is an incredibly high-performance regulator system that is approachable for every diver and every budget.

B2 BRASS & TITANIUM REGULATOR

HIGHLY AWARDED. HIGHLY REGARDED.

The Atomic B2 has garnered more awards from independent tests and reviews than any other regulator on the market. And the B2 has fans in virtually every corner of the dive industry. The signature breathing performance of the T3 was engineered into the B2 with virtually the same corrosion-resistance. The difference is the metals used in the first stage, which are more economical without sacrificing performance. And the B2 ergonomics make it the world’s most comfortable second stage, just like the T3.

PATENTED AUTOMATIC FLOW CONTROL

You shouldn’t have to think about breathing when you dive. The exclusive Atomic AFC helps you breathe naturally at any depth without thinking about making adjustments. The Atomic AFC eliminates the manual adjustment normally needed to regulate Venturi effect as you dive deeper. No dials to turn or buttons to push. A Rapid Adjustment Knob is included for special situations like surf entry or octo use. (US Patent No. 5,678,541)

Features

B2 FIRST STAGE FEATURES

Chrome-plated Brass and 316 Stainless Steel

Atomic exclusive balanced Jet Seat high-flow piston.

Optional factory-sealed to prevent outside contamination from silt and sand.

Nitrox ready – approved for non-dedicated EAN use with mixtures up to 40%.

Ports: 2 HP fixed / 5 LP on swivel cap

B2 SECOND STAGE FEATURES

All-Titanium construction and materials – same as the T3.

Pneumatically-balanced poppet, high-flow case and lever design for easy breathing at all depths and tank pressures.

Patented Atomic AFC – Automatic Flow Control.

Soft overmolded Rapid Adjustment Knob for manual detuning in special situations such as surf entries or octo use.

Patented Atomic Titanium Seat Saving Dynamic Orifice maintains crisp like-new factory tuning and prevents damage during storage.

Hose features patented polished 316 Stainless Steel Atomic Comfort Swivel with Black PVD coating.

Dual material second stage cover enables entire front to be used for purge.

Elliptical exhaust valve dramatically reduces exhalation effort at depth.

Dual silicone comfort fit mouthpiece with tear-resistant bite tabs – both comfortable and durable.

Optional color kit available.

Payment & Security

Payment methods

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

WARNING: This product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.

Frequently Asked Questions

What makes the Atomic Aquatics B2 regulator special?

The B2 pairs Atomic's balanced Jet Seat high-flow piston first stage (chrome-plated brass with 316 stainless steel) with a second stage built from the same titanium components as their flagship T3 — including the patented titanium Seat Saving Dynamic Orifice that keeps the regulator breathing like it was just tuned. You also get Atomic's Automatic Flow Control, a rapid adjustment knob for surf entries, and the stainless Comfort Swivel that stops hose pull. At about 2.5 lbs for the yoke version, it is Atomic's most popular regulator for a reason.

Is the Atomic B2 sealed, and can it handle cold water?

The environmental seal is optional on the B2 — Atomic offers factory-sealed DIN and yoke versions that keep silt, sand, and contamination out of the first stage. For diving in water below 50°F (10°C), Atomic recommends the sealed version with the anti-freeze kit. If you dive cold water regularly and want the seal standard rather than optional, that is exactly what the ST1 offers.

How often does an Atomic regulator need service?

Every 2 years or 300 dives, whichever comes first — Atomic's officially published interval, and one of the longest in the industry (most brands require service annually or every 100 dives). Atomic also recommends a quick annual inspection by an authorized dealer between services. Over years of ownership, that service schedule is a real cost saving.

What is Atomic Aquatics' warranty on regulators?

A limited lifetime warranty for the original owner — and unusually, Atomic states the warranty is NOT contingent on proof of service. All titanium and metal parts are additionally warranted against corrosion for life. To activate it, register within 30 days of purchase, and buy from an authorized Atomic dealer (purchases from us qualify). Wear items like mouthpieces, hoses, and o-rings carry a 2-year warranty.

87%

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(87)

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Fantastic

Shipping was fast. Halcyon gear is top of the line.

item was as described and tansaction was quick

item was as described and tansaction was quick and professional

Thermal Pullover

I purchased this to go along with the matching bottoms bought from Amazon but fulfilled by Divecatalog.com.

Overall, I like the quality of the material, and the material used to line the inside of the suit.

I tried both the L and XL pants, I typically wear a L in pants and shorts purchased from Columbia sportswear, but an XL top. Prior dive suits I’ve had to go with an XL to fit, so with a split top-bottom combination I get to enjoy a more tailored fit.

As far as the pants are concerned, the legs are disproportionately long IMHO.

My one complaint is the legs on the bottoms and sleeves on the top, just end, I would much prefer a sewn cuff for durability and style purposes, and my reason for subtracting one star.

Pay the extra

It may cost a little more but compared to the Scubapro Hydros Cargo Thigh Pocket, but it’s a night and day difference. I haven’t heard a complaint about the S-TEK.

The S-Tek is made from heavy-duty 1000D Cordura, to meet the stresses of the environment and hard use. How does this compare to Scubapro Hydros Cargo Thigh Pocket, people complaining the material ripping apart at the seams/stitching after 20 dives.

Mounting uses a stainless steel bolt snap to the waist harness D-ring and an adjustable strap for the thigh, the Hydros uses a plastic hook and strap.

The S-TEK is the largest of the three, measuring approximately 10” x 5” x 3” which is big enough to fit my iPhone 15 in the SeaLife SportDiver Ultra Underwater Housing.

I’m not sure where Scubapro all went wrong with the Hydros and Ninja pocket, but for the price of shipping, I would only purchase the S-TEK.

Affordable Fins

Purchased these from Amazon, before I learned about DiveCatalog.com, so while I paid more, they were still an affordable option while waiting on the warranty repair of my Scubapro Supernova fins. I wear a size 12 shoe (NIKE & New Balance) and the chart recommends XL which matched the Supernova XL fins, but to me, the pocket felt a bit tight, so I returned them for the 2XL. While you “can” wear them without a bootie, I wear Scubapro Go 3mm socks (3XL) and the still fit fine. The are positive buoyancy, although I don’t think as positive as the Supernova, but I feel better knowing they will float instead of falling to the ocean floor while doffing them prior to getting back on the boat.

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Open Box Atomic Aquatics B2 Regulator