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Built to withstand extreme freezing environments, the Apeks MTX-RC Octopus delivers military-grade secondary regulator performance when reliability matters most. Engineered around military cold-water protocols, the MTX-RC combines an over-moulded protective bumper design with full user controls. Featuring a pneumatically balanced valve, an inhalation effort adjustment knob, and a high-visibility yellow purge cover, it delivers smooth, gas-rich airflow in ice dives, deep technical descents, and heavy currents.
Military Cold-Water Engineering & User Adjustability
Features an oversized, tactile inhalation control knob that allows divers to fine-tune breathing resistance underwater—preventing free-flows in cold water or strong currents. Heavy-duty over-moulded protective bumpers safeguard the regulator against harsh cave and wreck impacts.
Features and Benefits
- Military Cold-Water Tested: Built to meet United States Navy Experimental Diving Unit (NEDU) extreme cold-water testing standards.
- Inhalation Effort Adjustment Knob: Diver-adjustable control knob lets you dial in crack pressure to prevent accidental free-flows during cold entries or rapid descents.
- Pneumatically Balanced Valve: Ensures smooth, low-effort breathing performance regardless of depth or cylinder pressure.
- High-Visibility Yellow Cover & Hose: High-impact rubber yellow purge cover and 36-inch yellow flex hose allow rapid visual location during out-of-air emergencies.
- Patented Heat Exchanger & Deflector: Metal heat exchanger surrounding the valve mechanism dissipates freeze risk while wide exhaust deflectors route bubbles clear of your field of view.
- Reversible Hose Routing: Can be converted by an authorized technician for right-hand or left-hand hose entry to match custom technical or sidemount configurations.
Technical Specifications
| Brand | Apeks Marine Equipment |
|---|---|
| Product Model | MTX-RC Octopus |
| Valve Type | Pneumatically Balanced Demand Valve |
| User Adjustments | Inhalation Breathing Effort Knob & Venturi Control Switch |
| Included Hose | 36" High-Visibility Yellow Braided Flex Hose |
| Cold Water Rating | Yes (Military Cold Water & EN250A Extreme Cold Certified) |
| Best For | Ice Diving, Extreme Cold Water Scuba, Technical Diving, & Sidemount Backup |
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