Compact and light, to ease your jaw on long dives
Apeks calls the XL4+ a compact, lightweight regulator for diving in all environments, including cold water. Its design and low weight help reduce jaw fatigue on long dives, it makes an ideal stage regulator for exploration divers carrying a lot of equipment, and Apeks pitches it as a high-performance option for divers serious about saving weight. The compact machined first stage is based on Apeks' expedition-tested DS4 platform and weighs 905 g (32 oz) in DIN or 1,041 g (37 oz) in yoke.
Apeks has recalled some XL4 / XL4+ / OCEA second stages (serials 250402212 to 260402893) for inspection. We are checking our distributor's stock, so ordering this model is paused for now.
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Ordering this model is paused for now. Ask us on LINE.
A compact machined first stage based on the DS4 platform. Its over-balanced diaphragm lets the medium pressure in the hose rise faster than ambient as you descend, which Apeks says gives superior performance at depth. It has 2 HP ports and 4 MP ports.
The over-moulded endcap and environmental diaphragm help prevent the ice build-up that can cause a first-stage free flow in extreme conditions, and protect the first stage from impacts. A large heat-exchanger diaphragm clamp helps raise the gas temperature inside the first stage. Apeks lists it as certified for cold-water use (EN250A).
The compact, lightweight second stage improves comfort and helps reduce jaw fatigue on long dives. The Comfo-bite mouthpiece has a bridge across the upper palate, so it stays in place without bite pressure, and a reusable clip makes changing mouthpieces in the field simple.
A large, over-moulded purge button is self-flushing and controllable, and the ergonomic venturi lever is easy to use and find. A large heat exchanger in the second stage improves cold-water performance and freezing resistance, and the nylon braided hose, Apeks says, performs better in cold water than traditional rubber hose.
Apeks built the XL4 OCEA from the XL4+, reconsidering every material and process: OCEA uses recycled and bio-based plastics and lead-free brass, made in a solar-powered facility. Both have an over-balanced first stage, 2 HP and 4 MP ports, EN250A cold-water certification and a Comfo-bite mouthpiece. Still deciding? Ask us on LINE.
It is how the first stage connects to the tank valve, so match the valves you dive with. Apeks lists the first stage at 905 g (32 oz) in DIN and 1,041 g (37 oz) in INT (yoke). Not sure? Ask us on LINE.
Yes. Apeks says the XL4+ makes an ideal stage regulator for exploration divers carrying a lot of equipment.
Apeks lists it as certified for cold-water use (EN250A), with the environmental dry kit as standard, an over-moulded endcap against ice build-up and heat exchangers on both the first and second stage.
Two HP ports (7/16" UNF) and four MP ports (3/8" UNF). The hose is a braided Flexi-hose with a standard metallic connection.
