Apeks XL4 Regulator

1st Stage
Breakthrough, innovative over-moulded first-stage endcap and environmental diaphragm help prevent ice build-up that can cause first stage free flow in extreme circumstances. Also protects the first stage from impact damage
Large surface area heat exchanger diaphragm clamp helps increase the gas temperature inside the 1st stage, resulting in improved cold water performance
Unique over-balanced diaphragm design—as the diver descends, the over-balancing feature allows the medium pressure gas in the hose to increase at a faster rate than ambient. This results in superior performance at depth
Compact machined 1st stage based on the expedition tested Apeks DS4 platform.

2nd Stage
Compact and lightweight 2nd stage improves comfort and helps reduce jaw fatigue on long duration dives
High-performance, pneumatically-balanced, lever-operated poppet valve
Large, over-moulded, self-flushing and controllable purge button
Ergonomic Venturi lever is easy to use and locate
Flexible nylon braided hose has better cold water performance than traditional rubber hose
Standard metallic hose connection for interchangeability
Comfo-biteTM mouthpiece has a unique bridge that fits across the upper palate and does not require bite pressure to stay in place
Re-useable mouthpiece clip makes it simple to change mouthpieces in the field
Durable and flexible rubber exhaust tee provides excellent bubble diversion.