Gemini CCR


The FATHOM Gemini is split-scrubber design mCCR


NOTE: Training is required to purchase.  Please contact one of the FATHOM CCR instructors at


• 5” (127 mm) dia x 13” (330 mm) tall
• 20.2 lb (9.2 kg) without cylinders or scrubber material

• No batteries inside head eliminates the possibility of toxic chemicals in breathing loop
• Fully potted and submersible head eliminates the possibility of corrosion on sensitive life‑support equipment
• Splitter/isolation board allows two devices to monitor oxygen sensors
• Hardwired leads and coaxial SMB connectors on oxygen sensors eliminate multiple connections and fragile Molex connectors.
• Minimal head space reduces static loop volume
• Gas addition in exhale head insures proper gas mixing in scrubber before it reaches sensors and diver

Breathing Loop
• Backmounted counterlung provides excellent work of breathing (WOB) in all positions while keeping frontal area free of clutter for stage bottle mounting and minimizing diver’s profile.
• OPV in counterlung acts as a water dump and allows diver to dewater unit if needed.
• Shrimp DSV with quick disconnect bayonets allow for easy cleaning and inspection of one-way valves
› Optional Shrimp BOV allows for rapid bailout without removing mouthpiece

• 4.8 lb (2.2 kg) dual axial scrubbers
• Removable and swappable scrubber baskets
• Black Amalgon canister insulates scrubber 400 times better than aluminum
• Latchless head, canister and bottom streamlines profile

Dual MAV/Needle Valve
• Needle valve incorporates the simplicity of a constant mass flow (CMF) orifice without the IP adjustment issues or the risk of blockage from debris.
• 316 SS Swagelok needle valve for precise flow
• Fully recessed manual oxygen addition button prevents unwanted oxygen addition
• Non depth compensated Apeks DS4 1st stage with stronger spring allows for adjustment from 200-290 psi (14-20 bar) IP for 400-600 fsw (122-183 msw) maximum depth.
• Fully recessed manual diluent addition button prevents unwanted gas addition
• Female QC-6 plugs into offboard bailout/diluent
• Bypass port routes gas directly to optional BOV

PO2 Monitoring
• NEW and improved HUD provides reliable secondary PO2 monitor
› Reversible display
› Automatic brightness adjustment
› Voltage indication on start-up
› Visual alarm feature
• NEW Shearwater Petrel 3 primary display
• Optional Shearwater NERD 2 replaces Petrel 3 as primary display


FATHOM Gemini CCR Spec Sheet
pdf | 161.71 KB | View online | Download
Last updated: November 14, 2022


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