Apeks XL4 OCEA Regulator Grey

Apeks XL4 OCEA Regulator Grey

The XL4 OCEA combines a compact regulator layout with an over-balanced, dry-sealed first stage. Biobased and recycled second-stage polymers are used in the housing, while the small second stage and straightforward Venturi control keep the setup practical for travel and regular diving.

Features and benefits

• Over-balanced first stage. The diaphragm mechanism increases intermediate pressure slightly faster than surrounding pressure as you descend, helping compensate for denser breathing gas at depth.
• Dry environmental chamber. The sealed chamber keeps water and sediment away from the first-stage spring mechanism and supports resistance to freezing in cold water.
• Balanced second stage. Pneumatic balancing reduces the force needed to open the demand valve, helping the second stage respond smoothly as you inhale.
• Venturi control. The lever changes airflow assistance inside the second stage. Use the pre-dive setting for surface handling and the dive setting as directed in the manual.
• Comfo-Bite mouthpiece. The silicone palate bridge supports the second stage with less need to clench your jaw, which can make longer dives more comfortable.
• Compact second stage. The small body keeps bulk down at the mouth and in the dive bag, making the platform practical for travel and compact equipment layouts.
• Heat-exchange clamp. The large first-stage clamp provides surface area for heat transfer from the surrounding water, helping counter the cooling caused by gas expansion.
• Self-flushing purge. The accessible purge cover allows water to move around the button, helping rinse away sediment during correct cleaning.
• Flexible exhaust tee. The flexible rubber deflector directs exhaled bubbles away from the face while keeping the unit compact.
• OCEA housing materials. Biobased and recycled polymers are used in the second-stage housing, reducing its reliance on newly produced conventional plastic.

Setup and compatibility

Connection: DIN, Yoke. Choose the fitting that matches your cylinder valve and its pressure rating. Use the OCEA within its gas-compatibility limits; material or cleaning claims do not make the standard model a dedicated pure-oxygen regulator.

Care, rinsing and storage

After each dive, connect the assembled regulator to a scuba cylinder and open the valve to pressurise the system. Keep it pressurised while fully submerging the first stage, second stages and connected hoses in fresh water. This allows thorough cleaning of the exposed components and hoses while helping prevent water entering the internal air passages, where it can cause corrosion and damage. Keep the cylinder secure throughout cleaning.

For routine cleaning, Dive Gear Australia recommends Cressi Neoclean Wetsuit Wash Neoprene Cleaner 500 mL or Revivex Wetsuit Shampoo 10 oz to help remove salt, chlorine and everyday residue. Dilute according to the cleaner’s label, then rinse thoroughly with fresh water.

Keep the regulator pressurised throughout washing and rinsing. Lift it out of the water and dry the first stage and cylinder connection before closing the cylinder valve, releasing the pressure and disconnecting. Fit the clean, dry dust cap, then allow the regulator to dry in the shade. Store it with the hoses loosely curved, without sharp bends or tension.

Before each dive, inspect the mouthpiece, hoses and connections for wear or damage. Have your regulator serviced by an authorised Apeks technician at the interval specified in its manual, or sooner if it leaks, is damaged or its breathing performance changes. Leave internal adjustments and repairs to a qualified technician.