XL4+ Stage 3 Dive Regulator + Octopus

Overview:
The Apeks XL4+ Stage 3 regulator set is a compact and lightweight high-performance system designed for divers who demand reliability in all diving environments, including cold water conditions. Its lightweight design helps reduce jaw fatigue during long dives, making it an excellent choice for both recreational and technical divers.

Because of its small size and reduced weight, the XL4+ is also an ideal stage regulator for exploration divers carrying multiple cylinders and equipment. Built on the proven Apeks DS4 platform, the XL4+ offers excellent breathing performance, durability, and dependable operation even in demanding environments.

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.

• Over-balanced diaphragm design enhances breathing performance at depth.

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

• 2 HP ports and 4 MP ports for flexible hose routing.

• Durable one-piece machined body construction.

Second Stage Features:

• Compact and lightweight second stage reduces jaw fatigue during extended dives.

• Large heat exchanger improves freezing resistance in cold water.

• High-performance pneumatically balanced poppet valve for smooth breathing.

• Large self-flushing purge button that is easy to control.

• Ergonomic Venturi lever for airflow control.

• Flexible braided nylon hose with improved cold water performance.

• Standard metal hose connection for compatibility and interchangeability.

• Comfortable Comfo-bite™ mouthpiece reduces bite pressure and jaw fatigue.

• Reusable mouthpiece clip allows quick mouthpiece replacement.

• Durable rubber exhaust tee for efficient bubble diversion.

• UV inhibitors prevent discoloration of white components over time.

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)

• Environmental Dry Kit: Standard

• Exterior Finish: Satin

• Cold Water Use: Yes

• Second Stage Type: Pneumatically balanced

• Opening Effort Control: No

• Venturi Lever: Yes

• Mouthpiece: Comfo-bite™

• Exhaust Tee: Standard (1 set)

• Heat Exchanger: Yes

• Hose Type: Braided flexi-hose

• Work of Breathing: Avg. 0.90 J/l

Weight:

• DIN: 905 g

• Yoke: 1041 g

What’s in the Box:

• 1x First stage

• 1x Second stage (XL4+)

• 1x Octopus

• Regulator hoses