The Oceanic ZEO FDX-i Regulator Set pairs the pneumatically balanced ZEO second stage with the cold-forged, over-balanced diaphragm FDX-i first stage, built for divers who want consistent breathing performance in cold water and available with a Yoke or 300 bar DIN fitting.
Who it is for
This set suits divers who spend time in cold or temperate water and want a regulator that resists the dry-mouth feeling that comes with long, cold dives, as well as travel divers who benefit from the FDX-i’s compact, lightweight, in-line first stage body. It also fits nitrox divers, since both stages are standard to 40 percent oxygen, and anyone who wants diver-adjustable airflow control rather than a fixed breathing response.
Key details
- Second stage: ZEO, pneumatically balanced demand valve with a chrome-plated marine brass valve housing
- First stage: FDX-i, cold-forged, over-balanced diaphragm design with environmental sealing
- Work of breathing: 0.86 joules, factory-set inhalation effort of 0.0 to 2.5 inches of water column
- Second stage weight: 7.2 ounces without hose; dimensions 2.3 inches by 3 inches, oval shape
- First stage ports: 4 low pressure and 2 high pressure, angled; first stage weight 21 ounces in Yoke configuration
- Nitrox compatible to 40 percent on both stages
- Patented Dynamic Adjustment, A.V.S. dive/pre-dive switch, in-line ball swivel, and orthodontic mouthpiece with tabs
Compatibility and sizing
The set is offered in two tank-valve configurations: a standard Yoke (A-clamp) fitting and an optional 300 bar DIN fitting. Choose the connection that matches the valves on the tanks you dive most often.
What’s in the box
- ZEO second stage
- FDX-i first stage
- Maxflex swivel hose
DiveCatalog.com is an authorized Oceanic dealer and has operated as a dive shop in Irvine, California since 2003, so call or chat with us at 888-701-4017 if you have questions about DIN versus Yoke fit or nitrox compatibility for your setup.
