APEKS DB4+ 1st Stage, Dive Regulator

APEKS DB4+ 1st Stage – Compact Dual-Outlet Design for Reliable Twin Regulator Performance

Build a dependable regulator system with the DB4+ 1st Stage, engineered to deliver stable intermediate pressure and reliable cold water performance in demanding dive environments. Designed with a balanced diaphragm system, this first stage maintains consistent airflow across varying depths and tank pressures, helping ensure smooth breathing performance throughout your dive.

Built by Apeks and trusted by technical and cold water divers worldwide, the DB4+ 1st Stage is known for its environmentally sealed design and rugged construction. At Aquatic Sports, we recommend this DIN configuration for divers seeking a durable, mission-ready first stage capable of performing in harsh and challenging underwater conditions.

Why Divers Choose the DB4+ 1st Stage

• Balanced diaphragm design for stable intermediate pressure
• Environmentally sealed system for cold water reliability
• Consistent airflow delivery across varying depths
• Durable satin chrome finish for long-term marine protection
• DIN connection for secure high-pressure cylinder attachment

Key Features

• High-performance balanced diaphragm first stage
• Environmental sealing to prevent contamination and freezing
• Multiple low-pressure and high-pressure ports for flexible hose routing
• Compact and rugged design for technical and advanced configurations
• Designed for recreational, cold water, and technical diving applications

Perfect For

• Cold water divers requiring dependable environmental protection
• Technical divers building a custom regulator setup
• Divers upgrading to a performance-focused first stage
• Divers seeking long-term durability and stable breathing support

Mission-Critical Confidence

The DB4+ 1st Stage delivers stable pressure management, cold water protection, and trusted Apeks engineering, forming a reliable foundation for high-performance regulator systems in any dive environment.