Zeo + FDXi 

Designed for Depth.

The pneumatically-balanced ZEO is an engineering marvel of precision, durability and comfort. Its durable chrome-plated marine brass metal valve delivers a phenomenal breathing experience, improves cold-water performance and helps recirculate moisture from exhalation to prevent dry mouth. The breathing adjustment gives the diver a wide range of control to precisely set airflow throughout the dive.

The ZEO comes standard with an in-line hose swivel, inhalation effort control, dynamic adjustment technology dive/ pre-dive switch and a super comfortable orthodontic mouth piece featuring an inline ball swivel on the hose connection to eliminate the binding that can cause jaw fatigue.

The cold-forged, over-balanced diaphragm FDX-i first stage is environmentally sealed. The in-line design limits the pressure loss inherent in “L” type first stage designs making the FDX-i more efficient and lighter due to its compact form.

Second Stage Features - Zeo

• Pneumatically balanced second stage automatically maintains consistent inhalation effort throughout the dive
• Diver adjustable inhalation effort allows the diver to control a desired level of airflow at any time.
• Patented Dynamic Adjustment automatically maintains inhalation effort throughout the dive
• Adjustable Venturi Switch (A.V.S.) for simple dive/pre-dive adjustment
• Inline ball swivel reduces jaw fatigue
• Orthodontic mouthpiece
• Paired with the FDX-i first stage

Second Stage Specs - Zeo

• Feature & Functions:  Zeo Second Stage (Metal Valve System)
• Valve Type:  Demand
• Adjustment(s):  Knob / Pre-Dive Switch
• Balancing System:  Pneumatic
• Integrated Purge Button:  Yes
• Mouthpiece:  Orthodontic w/ Tabs
• Nitrox Compatibility:  Standard to 40%
• Ambidextrous:  No
• Integrated Switch:  Yes
• Weight (without hose):  7.2 ounces
• Dimensions (front profile):  2.3 Inch x 3 Inch (Oval Shape)
• Minimum Creaking Effort:  Diver Adjustable
• Factory Set Inhalation Effort:  0.0~2.5 IWC
• Work of Breathing:  0.86
• First Stage:  FDX-i

First Stage Features - FDX-i

The FDX-i in-line design provides an improved flow rate, greatly reduced weight and more ergonomic port positioning for better hose routing when compared to the classic right angle first stages.

• Precision Cold Forged
• Reduced weight
• Pneumatically balanced – consistent performance at any depth
• Environmentally Sealed diaphragm – cold water ready
• 4 Low Pressure and 2 High Pressure Ports
• Angled ports for ideal hose routing
• Improved flow rate over standard right angle first stages.

First Stage Specs - FDX-i

• Valve Type:  Over-Balanced Diaphragm
• Primary Material:  Forged Marine Brass
• Low Pressure Ports:  4
• High Pressure Ports:  2
• Fixed Yoke Knob:  Yes
• Nitrox Compatibility:  Standard to 40%
• 300 BAR DIN Fitting:  Optional
• Sealed Valve Design:  Yes
• Environmental Protection:  Yes
• Weight (Yoke):  21 Ounces
• Factory Set Intermediate Pressure:  138-142 PSI
• Pressure Drop:  9 PSI