Lets Go Diving




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Part Number:RG122111 Manufacturer: APEKS Size: DIN


The MTX-R is based on the MTX, a regulator that was developed in accordance with the United States Navy Experimental Dive Unit extreme cold water test. Innovations in design mean that the MTX-R regulator performs in almost freezing water at a depth of over 60 meters, something that very few other regulators on the consumer market can boast.

With an innovative first stage design that helps to prevent ice build-up around the diaphragm, the MTX-R is reliable, rugged, and expedition ready.


  • Unique over-balanced diaphragm design as the diver descends, the over-balancing feature allows the medium pressure gas in the hose to increase at a faster rate than ambient. This - results in superior performance at depth
  • Compact environmentally dry sealed diaphragm system completely eliminating the maintenance issues associated with silicone, oil or grease filling
  • Breakthrough, innovative over-molded first-stage endcap & environmental diaphragm helps prevent ice build-up that can cause first stage free flow in extreme circumstances. Also - protects the first stage from impact damage
  • Easy to grip DIN hand-wheel or over-molded yoke hand-wheel, only requires one hand to release
  • DIN, Yoke, and M26 Thread available, 300bar, 232bar and M26 300bar (O2) respectively
  • 5 x 3/8? UNF (Unified National Fine) medium pressure ports
  • 2 x 7/16? UNF high-pressure ports
  • The 5th 3/8? UNFmedium pressure port includes a protective bumper when not in use
  • Forged first stage body with heat exchanging ribs for maximum thermal performance
  • Angled HP ports for optimal hose routing and fitting of transmitters
  • Forged rotating turret with medium pressure ports in a parallel direction for improved hose orientation
  • Ribbed diaphragm clamp for improved heat exchange in cold water conditions
  • Double swivel hose for greater freedom of movement and comfort
  • Tested for Octopus use - EN250A to 60 meters cold water
  • Nitrox/Oxygen compatible Up to 40% O2 outside the EU (European Union), within the EU anything above 21% O2 must use an M26 Connection
  • Simple to use with no dive adjustment controls and reduced chance of free flow occurrence, pre-settable cracking effort, or venturi control by an Apeksapproved qualified technician
  • High performance pneumatically balanced lever operated poppet valve
  • Large, diver friendly self-flushing controllable purge button
  • The front cover with over-molded elastomer incorporates a formed chrome plated brass plate improving the durability of the second stage
  • Large protective elastomer bumpers on the side and on the top to protect the second stage from impacts and scratches in the most vulnerable places
  • The reversible second stage for either a left or right-hand gas supply configuration
  • A heat exchanger (patented) which surrounds the valve mechanism, dissipates the cold caused by gas expansion while drawing in the warmth of the ambient water
  • Removable bungee necklace with a lockout feature for retaining the second stage in the mouth of an unconscious diver during rescue and to assist with jaw fatigue
  • Features an innovative Diver Changeable Exhaust system (DCE). The system gives the diver the ability to change from a small exhaust tee to a large exhaust tee. The regulator is - supplied with both sets of exhaust tees
  • Comfo-bite mouthpiece
  • Flexible nylon braided hose has better cold water performance than a traditional rubber hose


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