Atomic Aquatics

Atomic Aquatics B2 (Sealed, Yoke)

Atomic's balanced piston workhorse, pairing an all-titanium second stage with a chrome-plated brass first stage at a lower price than the T3.

Environmentally sealed

Sealed first stage chamber, protects against ice formation and contaminants in cold or silty water.

Atomic Aquatics B2 (Sealed, Yoke)
$969.95
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Released—
First stagepiston
BalancedYes
Environmentally sealedYes
Cold-water rated—
Connectionyoke
Max pressure—
HP / LP ports2 / 5
Adjustable 2nd stageYes
Weight1134g
Nitrox-ready (EAN40)Yes
Octo includedNo

"HP / LP ports" is the number of high-pressure and low-pressure ports on the first stage, which caps how many accessories (transmitter, SPG, inflator, second second-stage) you can run at once.

Pros
  • All-titanium second stage construction shares its design with the flagship T3, at a noticeably lower price
  • Automatic Flow Control (AFC) plus a 30-degree Comfort Swivel keep breathing effort and hose drag consistent across depths and head positions
  • Factory sealing keeps silt and sand out of the first stage without stepping up to Atomic's most expensive tier
Cons
  • Chrome-plated brass first stage adds weight versus the titanium-billet T3 (2.5 lb vs under 1.8 lb)
  • Sealed version costs more than Atomic's non-sealed B2 for divers who only dive warm, clear water
  • Also sold in DIN and unsealed configurations, confirm the listing matches this sealed yoke spec

The B2 is Atomic’s mid-tier piston reg, essentially the T3’s second stage bolted to a more affordable brass first stage. It’s a common pick for divers who want Atomic’s ergonomics and titanium breathing components without paying full T3 money.