Description The Apeks XL4 Oxygen Regulator is a lightweight, compact regulator built for divers who value comfort, efficiency and high performance in every environment, including demanding cold-water conditions. Its reduced weight helps limit jaw fatigue on extended dives, making it a reliable choice for both recreational and technical divers. Compact yet powerful, the XL4 is also perfectly suited as a stage regulator for technical exploration, offering high performance without unnecessary bulk. Apeks Nitrox regulators are cleaned and assembled in a purpose-built Class ‘J’ Clean Room using oxygen-safe lubricants and components, making them suitable for use with up to 100% O₂. For European distribution, they are supplied with the EN 144-3 and EN 13949 compliant M26 fitting, ensuring compatibility with nitrox mixtures up to 100% oxygen. 1st Stage Features: Over-Balanced Diaphragm: Delivers superior breathing at depth by increasing medium pressure gas faster than ambient pressure as the diver descends. Compact DS4 Platform: Based on the proven Apeks DS4 design for reliable performance. Over-Moulded Endcap & Environmental Diaphragm: Prevents ice build-up, reducing freeflow risk in extreme cold, and protects against impact damage. Large Heat Exchanger Diaphragm Clamp: Increases gas temperature inside the first stage for improved cold-water capability. Port Configuration: Four MP ports and one HP port. 2nd Stage Features: Pneumatically Balanced Valve: Pneumatically balanced lever operated poppet valve. Lightweight, Compact Design: Reduces jaw fatigue and improves overall comfort. Ergonomic Venturi Lever: Simple to locate and operate for airflow adjustment. Large, Self-Flushing Purge Button: Over moulded, easy to operate even with gloves. Durable Rubber Exhaust Tee: Directs bubbles away for clear vision and comfort. Comfo-Bite Mouthpiece: Patented palate bridge reduces bite pressure for comfort on long dives. Re-Useable Mouthpiece Clip: Allows simple field mouthpiece replacement. Braided Nylon Hose: Provides superior cold-water performance and flexibility.
