Cressi AC5 Zen Regulator
The AC5 and Zen pair a straightforward piston first stage with Cressi’s compact Zen second stage. Designed for warm-water diving, the combination suits divers who want simple controls and a low-bulk recreational regulator.
Features and benefits
- Straightforward first stage. Unbalanced piston uses a conventional mechanism in the listed regulator configuration.
- Venturi control. Select the appropriate setting for surface handling or diving to help manage free-flow tendency.
- Connection options. 1 × 7/16 in UNF HP ports and 4 × 3/8 in UNF LP ports support the stated gauge and hose configuration.
Setup and compatibility
Connection: DIN, Yoke. Choose the fitting that matches your cylinder valve and its pressure rating. Intended for warm-water use above 10°C. The AC5 and Zen configuration includes the primary first and second stages; an octopus is purchased separately.





