Apeks DS4 with XTX40

DS4 first stage

• Overbalanced diaphragm design: as the diver descends, the intermediate pressure in the hose rises faster than the ambient pressure. The result is superior performance at depth.
• 2 high-pressure (HP) and 4 medium-pressure (MP) ports, angled for optimal hose routing.
• Environmental sealing: keeps water out of the main spring chamber, preventing ice formation and the entry of sediment and contaminants.

Second stage

• Pneumatically balanced for easier breathing.
• Large, easy-to-use XTX purge button with a 2-stage progressive purge: press the edge for a gentle flow when more control is needed (for example, to fill a lift bag), or press the centre for full flow (for example, to purge the regulator).
• Large Venturi lever with a soft rubber grip, easy to find and use. It reduces the entry of sediment and resists friction for smooth operation.
• Easy-grip breathing resistance adjustment knob, so the diver is always in control.
• Active antimicrobial protection: all moulded parts contain an additive that kills MRSA and protects against E. coli, bacteria and fungi. It is also highly effective against viruses, mould and algae.
• Silicone purge for easier breathing.
• Comfo-Bite™ mouthpiece, which virtually eliminates jaw fatigue.
• Patented heat exchanger around the valve mechanism: counteracts the cold caused by gas expansion by drawing warmth from the surrounding water.