Virtually identical performance as the T2 with a Brass First Stage
The B2 gives divers an close alternative to the all-Titanium T2. The signature Atomic breathing performance is nearly identical. The B2 is ergonomically designed to be the world’s most comfortable second stage just like the T2. The key difference is the chrome-plated Brass body of the B2 first stage, which is more economical without sacrificing performance. That’s why the B2 has garnered more awards from independent tests and reviews than any other regulator on the market.
The B2 First stage is built almost entirely with chrome plated brass, an exceptionally robust and hard metal renowned for its corrosion resistance, making it perfect for use in both saltwater and chlorine environments. The low-pressure ports are housed on a swivel turret to allow for perfect hose routing.
The B2 second stage houses a fully balanced titanium valve and lever that has a super smooth air delivery regardless of depth. The second stage has a fantastic 360-degree swivel which ensures the regulator is always in the right place, reducing jaw fatigue and making your dive more comfortable for longer.
Another unique Atomic second stage patent is the “Seat Saving Orifice” that allows for the seat to pull away from the sealing knife edge when not in use, significantly reducing the wear on this important component and therefore increasing longevity of the regulator’s performance.
Why Brass & Titanium?
Even though the use of multi-layer chrome plated Brass for the body of the first stage is a more conventional material choice… the performance of the B2 is truly superior to any other rival. Atomic designed our signature breathing performance into the B2 to give a diver the perfect combination of comfort, style and value. The main design difference? The total weight of the B2 is only 9 ounces more than the T2.