RRP: £1125

Free UK delivery on all orders over £50
  • A first of its kind, over-moulded first-stage end cap and environmental diaphragm to prevent ice build.
  • Forged 1st stage body gives maximum thermal performance.
  • Double swivel hose for greater freedom of movement and comfort.


Apeks MTX-RC Stage 3 Regulator Set packages the primary MTX-RC with the matching Octopus.

Introducing the brand new Apeks MTX-RC Regulator for 2020. Whether you want to dive in warm water, extreme cold water, dive deep or in a cave, this is the regulator you will want to breathe from. The MTX-RC allows complete control over your breathe while underwater.

The Apeks MTX-RC has evolved from the original MTX regulator that involved military-grade engineering with the super-smooth breathing. Apeks launched the MTX-R Regulator realising that all divers could benefit from the technology involved in this regulator. The MTX-RC is the regulator that takes all this and allows you to explore more in the knowledge of military technology.

MTX-RC Regulator
Go warm, go cold, go deep, go anywhere. Enjoy control in the extreme with the MTX-RC scuba diving regulator. Combining rugged, military grade engineering with the super-smooth breathing experience that Apeks regulators are renowned for, the MTX-RC is the regulator that lets you explore more.

Featuring the same freeze-resistant technology enjoyed by the whole MTX-R range, the MTX-RC resists free-flows in even the coldest temperatures, while offering the user the additional flexibility to adjust the settings for a more comfortable breathe in less extreme environments.

The second stage now features an oversized breathing effort adjuster on the side of the housing that will increase the amount of effort required to open the pneumatically balanced valve. Above that there is a venturi lever to alter the flow of air within the second stage, either directing it from the valve towards the mouthpiece or diverting it back towards the diaphragm to help close the valve. The second stage also features a large heat exchanger on the hose inlet to help increase the temperature as it passes into the second stage.

MTX-RC Octopus
Featuring the same freeze-resistant technology enjoyed by the whole MTX-R range, the MTX-RC resists free-flows in even the coldest temperatures, while offering the user the additional flexibility to adjust the settings for a more comfortable breathe in less extreme environments.

Includes a tactical style messenger bag to keep your regulators safe on your travels. Perfectly sized for a laptop, it’s also your new work bag!

Additional information


DIN, International A Clamp


First Stage

Satin plated brass body with heat exchanging ribs for maximum thermal performance.
Break through, innovative over-moulded first-stage endcap and 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.
Ribbed diaphragm clamp for improved heat exchange in cold water conditions.
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.
5 x medium pressure ports, 4 mounted on a rotating turret for improved hose orientation
2 x angled high pressure ports for optimal hose routing and fitting of transmitters.
Double swivel hose for greater freedom of movement and comfort.
Easy to grip DIN hand-wheel or over-moulded yoke hand-wheel, only requires one hand to release.
DIN, Yoke and M26 Thread available, 300bar, 232bar and M26 300bar (O2) respectively.
Tested for Octopus use – EN250A to 60 metres 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.

2nd Stage

Protective bumpers to protect the second stage from impacts and scratches in the most vulnerable places.
Ergonomic and simple to use venturi lever.
Oversized breathing effort adjuster makes adjustment easy in cold water whilst wearing gloves.
Large purge button.
Reversible second stage for either a left or right hand gas supply configuration.
A heat exchanger (patented) dissipates the cold caused by gas expansion while drawing in the warmth of the ambient water for a more comfortable breathe.
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, which has better cold water performance than traditional rubber hose.
Designed and manufactured in the UK.
No single-use plastic in the packaging


Connections Yoke and DIN available
Type of first stage Over-balanced diaphragm design, environmentally sealed
Body Type One piece forged body
Number of HP ports 2 (7/16″ UNF)
Number of MP ports 5 (3/8″ UNF)
Environmental Dry Kit Standard
First stage exterior Satin chrome
Orientation Convertible LH or RH
Coldwater Use Yes – extreme
Type of second stage Pneumatically balanced
Opening Effort Control Knob No
Integrated Venturi Lever No
Mouthpiece Comfo-bite™
Exhaust tee Diver Changeable – one set supplied
Heat Exchanger for freezing resistance Yes
Hose type Braided Flexi-hose
Nitrox compatible Yes to 40% O2 when new, out of the box / Can be O2 cleaned to 100%.


In the mid-1970s, two friends decided to combine their knowledge of diving and precision engineering. Working from a small garage in the north of England, they set about creating what has become some of the most respected scuba diving equipment on the market.

Decades later that spirit of precision-engineering and craftsmanship continues. Our world-class production facility and the fact that we have total control over every manufacturing process make Apeks scuba diving regulators the industry benchmark for design, quality and performance.


Inspired by technical diving and designed for all, the full range of Apeks scuba diving equipment, which now includes regulators, bladders, drysuits, instruments and accessories, has been adopted by technical divers around the world. Apeks scuba diving equipment is being used to explore some of the deepest, coldest and most advanced dive environments on earth. Because when the environment demands, only one thing matters; that your dive kit is designed, developed and tested to keep you safe and comfortable.



Scuba Dive Store always offer an extended returns policy of 30 days – so you can rest assured that if the suit, piece of diving equipment or gift doesn’t suit then just send it back and we will either exchange it or offer a full refund less any postage costs. Please return the item to the following address:

Scuba Dive Store
Valley Rd

Click here for full terms and conditions >


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