T3-like airflow, smart materials—at a value-driven price.

The B2 delivers Atomic’s effortless breathing and signature comfort using a chrome-plated brass first stage paired with a lightweight titanium-featured second stage. It’s the sweet spot for divers who want premium performance, long service intervals, and travel-friendly comfort without moving to full titanium.

Key Benefits

• Smooth, consistent breathing Balanced piston design provides high flow and stable performance from full to near-empty tanks.
• Comfort for long dives Light second stage reduces jaw fatigue; swivel hose minimizes tugging.
• Flexible hose routing Swivel turret with a bottom LP port makes long-hose/air-integration setups clean and streamlined.
• Lower upkeep 2-year/300-dive service interval reduces cost and downtime vs. many competitors.

Internal Engineering & Materials

• Titanium valve body & orifice (second stage) Ultra-light and corrosion-proof for comfort and longevity.
• Pneumatic balancing Keeps breathing effort low at any depth or cylinder pressure.
• Automatic Flow Control (AFC) Self-adjusts Venturi assist with depth—no manual knob needed.
• Kevlar-reinforced lever + large silicone exhaust Durable actuation with easy exhalation to cut fatigue.
• Comfort swivel Reduces jaw pull for a natural hose angle.

Key Specifications

• First Stage Type Balanced piston (higher flow and easier maintenance than diaphragm)
• Material Chrome-plated brass first stage; titanium-featured second stage
• Environmental Sealing Factory-sealed version (resists freezing and contamination)
• Ports 2 HP / 5 LP total (swivel turret + bottom LP)
• Swivel 360° turret for optimized hose routing
• Nitrox Up to 40% O₂
• Total Weight ~2.4 lb (first + second stage with hose)
• Second Stage Weight ~12.5 oz
• Service Interval 2 years or 300 dives
• Warranty Limited lifetime (original owner)

Nearly titanium-level performance with excellent comfort, streamlined routing, and reduced maintenance—making the B2 Atomic’s best performance-to-price balance.