Cressi AC5 + Zen + Octopus 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.
This package combines the required components listed below, with the available options allowing you to choose the final configuration.
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.
Package components
- 1 × Cressi AC5 Zen Regulator
- 1 × Cressi Zen Octopus
The list shows the required components at the displayed default quantities. Your selected sizes, connections, quantities and optional extras determine the final package.

Apeks EVX200 Second Stage Regulator 



