Apeks XL4+ Regulator

Product Details
The Apeks XL4+ is a compact and lightweight regulator designed for diving in all environments, including cold water. Its low weight and ergonomic design help reduce jaw fatigue during long dives. The XL4+ is also an excellent stage regulator, making it ideal for exploration and technical divers carrying extensive equipment.

Built on the expedition-tested Apeks DS4 platform, the XL4+ delivers high performance while focusing on weight savings, durability, and cold-water reliability.

Features

First Stage

• Compact, machined first stage based on the proven Apeks DS4 platform

• Innovative over-moulded endcap and environmental diaphragm to prevent ice build-up and protect against impact

• Large surface-area heat exchanger diaphragm clamp for improved cold-water performance

• Over-balanced diaphragm design for superior performance at depth

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

Second Stage

• Compact and lightweight design reduces jaw fatigue on long dives

• Large heat exchanger improves freezing resistance in cold water

• High-performance pneumatically balanced valve

• Large, over-moulded, self-flushing purge button

• Ergonomic Venturi lever, easy to locate and operate

• Flexible nylon braided hose for improved cold-water performance

• Standard metallic hose connection for interchangeability

• Comfo-bite™ mouthpiece reduces bite pressure

• Reusable mouthpiece clip for easy field replacement

• Durable rubber exhaust tee for effective bubble diversion

• UV inhibitors to prevent discoloration of white materials

Specifications

• Connections: Yoke or DIN

• First stage type: Over-balanced diaphragm, environmentally sealed

• Body: One-piece machined body

• HP ports: 2 × 7/16" UNF

• MP ports: 4 × 3/8" UNF

• Weight:

  • DIN: 905 g (2 lb)

  • Yoke: 1041 g (2.3 lb)

• Environmental dry kit: Standard

• Exterior finish: Satin

• Cold water use: Yes

• Second stage type: Pneumatically balanced

• Venturi lever: Yes

• Opening effort control knob: No

• Mouthpiece: Comfo-bite™

• Exhaust tee: Standard

• Heat exchanger: Yes

• Hose type: Braided Flexi-hose

• Work of Breathing (WOB): Avg. 0.90 J/L