Description Apeks XL4 3 Stage Regulator Set – Streamlined for Adventure. Engineered for Depth. The Apeks XL4 3 Stage Regulator Set delivers lightweight performance for serious divers. It performs in all environments, including cold water. With its compact design reducing jaw fatigue on long dives so you can stay comfortable and focused underwater. Because of its low weight, the XL4 also works perfectly as a stage regulator. Technical and exploration divers benefit from streamlined gear setups. If you want high performance without extra bulk, this regulator is the ideal choice. First Stage Features The first stage builds on the expedition-tested Apeks DS4 platform. Therefore, you get proven reliability in demanding conditions. Compact, one-piece machined body for durability Over-balanced diaphragm design for superior depth performance Environmentally sealed system to prevent contamination Over-moulded endcap and environmental diaphragm to reduce ice build-up Large heat exchanger diaphragm clamp to improve cold water performance 2 HP ports (7/16″ UNF) 4 MP ports (3/8″ UNF) As you descend, the over-balanced diaphragm increases medium pressure faster than ambient pressure. Consequently, you experience smooth and consistent breathing at depth. Second Stage Features The compact second stage improves comfort immediately whilst staying ready for any adventure – warm or cold. Pneumatically balanced valve for high performance Large heat exchanger for improved freezing resistance Ergonomic Venturi lever for easy adjustment Large, self-flushing purge button for quick clearing Flexible braided hose for better cold water performance Durable rubber exhaust tee for excellent bubble diversion Comfo-bite mouthpiece for secure fit without bite pressure Reusable mouthpiece clip for easy changes Additionally, the UV inhibitors help prevent discoloration of white components so your regulator maintains a clean, professional look over time. Technical Specifications First Stage Type: Over-balanced diaphragm, environmentally sealed Body: One-piece machined Environmental Dry Kit: Standard Cold Water Use: Yes Second Stage Type: Pneumatically balanced Venturi Control: Integrated lever Hose Type: Braided flexi-hose Work of Breathing (WOB): Avg. 0.90 joules/liter Weight: DIN: 905g (2 lb) Yoke: 1041g (2.3 lb) Why Choose the Apeks XL4 ? Lightweight for travel and stage configurations Excellent cold water performance Reduced jaw fatigue on long dives Reliable performance at depth In summary, the Apeks XL4 combines compact design, cold water reliability, and high-end performance. Choose it for your next dive and experience streamlined, dependable breathing in any environment.
