Apollo Bio Regulator A-320 NRX - Black Edition

The Apollo Bio Regulator A-320 NRX is a high-performance, environmentally sealed regulator system engineered for military, tactical and professional diving operations. Featuring a balanced diaphragm first stage with double diaphragm environmental sealing and an adjustable Bio-Air System (BAS) second stage, the A-320 NRX delivers exceptionally stable breathing performance across varying depths, tank pressures and environmental conditions.

The regulator’s environmentally sealed 1st stage isolates internal components from water, contaminants and silt intrusion — significantly reducing corrosion, freeze-up risk and performance degradation in cold or contaminated water environments. The second stage utilises Apollo’s proprietary Bio-Air System (BAS) with an internal bypass venturi design to deliver smooth, natural inhalation characteristics while maintaining efficiency under high workload.

Nitrox cleaned and compatible up to 40% oxygen as standard, the A-320 NRX is suitable for enriched air diving without additional preparation. Built with corrosion-resistant materials and precision engineering, this regulator system is designed to withstand demanding operational cycles typical of defence and commercial deployments.

• Balanced Diaphragm First Stage
  Provides consistent intermediate pressure regardless of depth or tank pressure.

• Double Diaphragm Environmental Seal
  Isolates internal mechanism from water and contaminants, improving cold-water reliability and corrosion resistance.

• Bio-Air System (BAS) Second Stage
  Internal bypass venturi design delivers smooth, stable breathing performance.

• Adjustable Airflow Control
  Diver-adjustable inhalation resistance for mission-specific tuning.

• Nitrox Ready (Up to 40%)
  Oxygen-cleaned and fitted with Viton O-rings.

• High-Performance Stainless Steel Bucket Filter
  Large surface area for improved airflow stability and extended service intervals.

• Corrosion-Resistant Construction
  Satin chrome-plated forged brass first stage with protective internal coatings.

• Swivel LP Hose with Ball Joint
  Enhances comfort and reduces jaw fatigue during extended dives.

• High-Durability HP Seat (Polyurethane)
  Engineered for long lifecycle performance under high pressure.

Technical Specifications

First Stage