XL4+ 1st Stage Dive Regulator

Overview:
The Apeks XL4+ 1st Stage is a compact and lightweight high-performance regulator, designed for divers who demand reliability in all environments, including extreme cold water conditions. Its minimal size and reduced weight make it ideal for travel, stage configurations, and technical diving, while also helping to reduce overall equipment load.

Built on the proven Apeks DS4 platform, the XL4+ delivers consistent airflow, durability, and excellent thermal efficiency, making it a trusted choice for exploration divers and those focused on performance and weight savings.

First Stage Features:

• Compact machined first stage based on the expedition-tested Apeks DS4 platform.

• Innovative over-moulded endcap and environmental diaphragm helps prevent ice build-up and protects against impact damage.

• Large heat exchanger diaphragm clamp increases internal gas temperature for improved cold water performance.

• Advanced over-balanced diaphragm design enhances breathing performance at depth.

• Environmentally sealed dry system prevents water and contamination from entering the mechanism.

• 2 high pressure ports and 4 medium pressure ports for flexible hose routing.

• Durable one-piece machined body construction.

• Excellent performance in cold water and harsh environments.

Specifications:

• Connections: DIN and Yoke available

• First Stage Type: Over-balanced diaphragm, environmentally sealed

• Body Type: One-piece machined body

• HP Ports: 2 (7/16" UNF)

• MP Ports: 4 (3/8" UNF)

• Weight: DIN – 905 g / Yoke – 1041 g

• Environmental Dry Kit: Standard

• Exterior Finish: Satin

• Cold Water Use: Yes

• Heat Exchanger: Yes