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Apeks
Apeks MTX-RC Regulator
Apeks MTX-RC Regulator
Go warm, go cold, go deep, go anywhere. The Apeks MTX-RC is a premium dive regulator built for divers who want dependable performance in demanding conditions without giving up breathing comfort. It combines rugged, military-grade engineering with the smooth delivery Apeks regulators are known for, making it a strong choice for cold water diving, deeper dives, and harsh environments where reliability matters.
If you want a regulator that feels controlled, robust, and confidence-inspiring when conditions are less forgiving, the MTX-RC is designed for exactly that job.
On This Page
- Overview
- Why Divers Choose the MTX-RC
- Features That Matter Underwater
- Who It’s For
- Setup & Use
- Technical Specs
- What’s Included
- FAQ
- Buy with Confidence
The Apeks MTX-RC Reg, built for serious diving conditions
If your diving takes you into cold water, deeper profiles, or more demanding environments, the MTX-RC is made to keep performance consistent.
Quick Product Summary
The Apeks MTX-RC is a high-performance scuba diving regulator designed for divers who need cold water reliability, depth-ready breathing performance, and durable construction. With an over-balanced diaphragm first stage, environmentally sealed design, reversible second stage, and diver-changeable exhaust system, it is built to perform where ordinary regulators can feel less capable or less confidence-inspiring.
- Product type: Scuba diving regulator
- Best for: Cold water diving, technical-minded divers, advanced recreational divers, expedition and harsh-environment use
- Connection type: DIN
- Colour: Satin Chrome / Grey
- Item number: RG122130
- Standout qualities: Freeze resistance, depth-ready performance, strong hose routing options, glove-friendly controls, UK design and manufacture
Helpful note before you order
If you are choosing between DIN and other connection types, or want help checking suitability for your cylinder setup and diving conditions, see our regulator buying guide or contact us before ordering.
Why Divers Choose the MTX-RC
Reliable breathing performance in extreme cold
The MTX-RC is built around freeze-resistant technology designed to reduce the risk of first stage free flow in very cold conditions. For divers, that means more confidence when diving in cold water, winter conditions, or environments where regulator icing is a real concern rather than a theoretical one.
Performance that keeps up as you go deeper
Its over-balanced diaphragm design increases medium pressure faster than ambient pressure as depth increases. In practical terms, this helps the regulator maintain strong breathing performance when dives become more demanding.
Built to take knocks without feeling delicate
From protective bumpers on the second stage to the robust first stage construction, this regulator is made for divers who use their kit hard. Whether you are shore diving, boat diving, traveling with gear, or diving around wrecks and rough entries, the MTX-RC is designed to feel durable rather than fragile.
Better comfort and control where it counts
Large, easy-to-use controls, a braided hose, a Comfo-bite mouthpiece, and practical hose routing all help make the regulator easier to live with underwater. This matters even more when you are wearing gloves, managing task loading, or spending longer in the water.
Set up for real divers, not just showroom specs
With multiple medium-pressure ports, angled high-pressure ports, reversible second stage configuration, and diver-changeable exhaust tees, the MTX-RC gives you meaningful flexibility instead of just technical-sounding features.
Features That Matter Underwater
Over-balanced diaphragm first stage
This is one of the key reasons divers choose the MTX-RC. As you descend, the design helps maintain breathing performance at depth. That makes it especially appealing to divers who want consistent delivery on deeper dives rather than a regulator that feels more basic or entry-level.
Environmentally sealed cold water design
The environmentally sealed first stage, over-moulded endcap, and diaphragm system are all there for one reason: to help prevent ice build-up and improve reliability in extreme cold. If you regularly dive in low temperatures, this is not a minor detail. It is one of the main buying reasons for this regulator.
Heat exchanging ribs and ribbed diaphragm clamp
These features improve thermal performance by helping the regulator exchange heat more effectively in cold water. In real use, that supports the regulator’s cold water credentials and helps reinforce long-term confidence in demanding conditions.
Five medium-pressure ports with rotating turret
Good hose routing can make a big difference to comfort, streamlining, and overall setup quality. With five MP ports, including four on a rotating turret, the MTX-RC gives you more flexibility for clean, practical hose routing.
Two angled high-pressure ports
These are positioned to improve routing and make fitting transmitters easier. For divers using more advanced setups or wanting cleaner configuration options, that is a practical advantage rather than just a specification line.
Large breathing effort adjuster and venturi lever
The oversize adjuster is designed to be easy to use in cold water and with gloves, while the venturi lever is ergonomic and straightforward. Together, they make in-dive adjustment easier when conditions or personal preference change.
Reversible second stage
The second stage can be configured for left or right hand gas supply. That gives more setup flexibility and can be especially useful for divers who want to tailor their configuration to their preferred hose routing.
Diver Changeable Exhaust system (DCE)
The MTX-RC includes both small and large exhaust tees, allowing the diver to change between them. This lets you fine-tune the setup to your own preference rather than being locked into a single exhaust configuration.
Braided flexi-hose and Comfo-bite mouthpiece
The flexible braided hose is designed to perform better in cold water than traditional rubber hose, while the Comfo-bite mouthpiece helps improve in-mouth comfort over the course of a dive.
Designed and manufactured in the UK
For many buyers, origin matters. UK design and manufacture can add reassurance around brand heritage, engineering credibility, and product consistency.
Important nitrox / oxygen compatibility note
The MTX-RC is nitrox/oxygen compatible up to 40% O2 outside the EU. Within the EU, anything above 21% O2 must use an M26 connection. Always verify suitability for your gas mix and local requirements before use.
Want a regulator you can trust in harsher conditions?
The MTX-RC is built for divers who put reliability, cold water performance, and practical setup flexibility first.
Why Choose the Apeks MTX-RC
Not every diver needs a regulator like this, and that is exactly why the MTX-RC stands out. It is not positioned as a basic entry-level option. It is for buyers who understand the value of robust engineering, dependable cold water performance, and a regulator that remains composed in more serious conditions.
Compared with more generic regulators, the MTX-RC offers a more specialist blend of freeze resistance, depth-ready performance, durable construction, and setup flexibility. The benefit is not just owning premium gear. The benefit is diving with equipment designed to reduce hesitation when conditions become less forgiving.
That matters most to divers who are upgrading from simpler kit, refining a more advanced setup, or investing in equipment they expect to keep and rely on for years.
Who Is The Apeks MTX-RC For
This regulator is a strong fit for:
- Divers who regularly dive in cold water
- Advanced recreational divers wanting higher-spec equipment
- Technical-minded divers who care about hose routing and configuration flexibility
- Divers planning deeper dives or more challenging environments
- Buyers who value durability and long-term equipment confidence
- Divers who want glove-friendly controls and practical underwater adjustability
Who it may not be for
The MTX-RC may not be the best fit if you are simply looking for the cheapest way to get started, only dive occasionally in warm water, or do not need cold water and expedition-level design priorities. In those cases, a simpler regulator from our scuba regulators collection may be more appropriate.
How to Get the Best from the MTX-RC
The MTX-RC is designed to be practical to configure and comfortable to dive, but as with any regulator, setup matters. Choosing the right connection type, routing hoses cleanly, and matching the configuration to your diving style will help you get the best performance from it.
In practice, that means:
- Confirm your cylinder valve setup before choosing connection type
- Use the port layout to create a clean, comfortable hose routing configuration
- Adjust the breathing effort control and venturi settings to suit conditions and preference
- Choose the exhaust tee option that best suits your preferred feel underwater
- Have the regulator set up and serviced in line with manufacturer guidance
Setup guidance
If you are moving up to a more advanced regulator for the first time, a little setup advice can make a big difference. Speak to one of our Scuba Technicians or Diving Instructors for help choosing the right configuration.
Apeks MTX-RC Technical Specs
First Stage Specifications
| Connections | Yoke and DIN available |
|---|---|
| Type | Over-balanced diaphragm design, environmentally sealed |
| Body Type | One piece forged body |
| HP Ports | 2 (7/16" UNF) |
| MP Ports | 5 (3/8" UNF) |
| Environmental Dry Kit | Standard |
| Exterior | Satin chrome |
| Orientation | Convertible left hand or right hand |
| Cold Water Use | Yes - extreme |
Second Stage Specifications
| Type | Pneumatically balanced |
|---|---|
| Opening Effort Control Knob | Yes |
| Integrated Venturi Lever | Yes |
| Mouthpiece | Comfo-bite™ |
| Exhaust Tee | Diver changeable - one set supplied |
| Heat Exchanger for Freezing Resistance | Yes |
| Hose Type | Braided flexi-hose |
| Nitrox / Oxygen Compatibility | Up to 40% O2 outside the EU; within the EU anything above 21% O2 must use an M26 connection |
| Recommended Temperature Use | 1 - 55°C |
| Swivel Hose | No |
Additional Product Details
- Colour: Satin Chrome / Grey
- Connection type shown: DIN
- Item number: RG122130
- Packaging: No single-use plastic
- Designed and manufactured in: UK
What’s Included
- 1st stage
- 2nd stage primary
- 2nd stage octopus
- Hoses
- Diver changeable exhaust system
- Submersible pressure gauge
- Regulator bag
Check out our related options in
Please check the full setup before ordering
If you need a complete regulator system other than the listed components above, check out our scuba regulators collection or contact us if you want help building the right setup.
Apeks MTX-RC Frequently Asked Questions
“It’s expensive. Is it worth it?”
If you only dive occasionally in easy warm-water conditions, you may not need this level of regulator. But if you dive in colder water, want more dependable performance at depth, or prefer gear built for harder use, the MTX-RC justifies its premium position through design focus, durability, and specialist performance features.
“Is it too advanced for me?”
It is not an inaccessible product, but it is a specialist regulator with features that will appeal most to divers who understand the value of cold water performance, configuration flexibility, and premium engineering. If you are unsure, ask before buying rather than guessing.
“Will it work with my setup?”
Connection type and gas compatibility are the main things to verify. The product details note DIN and Yoke availability, while oxygen compatibility depends on O2 percentage and EU vs non-EU use requirements. Always confirm suitability for your specific equipment and gas use.
“Will it be comfortable during longer dives?”
The Comfo-bite mouthpiece, flexible braided hose, breathing effort adjustment, and practical controls are all aimed at making the diving experience more comfortable and manageable, especially in demanding conditions.
“Is it actually built for cold water, or just marketed that way?”
The cold water positioning is supported by multiple source-backed design features, including environmental sealing, freeze-resistant technology, heat exchanging components, and testing for Octopus use to EN250A to 60 metres in cold water.
Is the Apeks MTX-RC suitable for cold water diving?
Yes. The MTX-RC is specifically built with freeze-resistant technology, an environmentally sealed first stage, and heat-exchange features aimed at strong performance in extreme cold water conditions.
Is this a good regulator for deep diving?
It is designed to perform well at depth thanks to its over-balanced diaphragm first stage, which helps maintain strong breathing performance as ambient pressure increases.
Is the MTX-RC good for beginners?
It can be used by a newer diver, but it is better suited to buyers who specifically want a premium, specialist regulator and understand why cold water design, hose routing flexibility, and advanced performance features matter.
What connection types are available?
The source states that Yoke and DIN are available. This listing shows DIN as the connection type. Check the exact variant before ordering.
What comes in the box?
The stated box contents are the 1st stage, 2nd stage, and hoses. The product details also note that the regulator is supplied with exhaust tees for the Diver Changeable Exhaust system.
Is it nitrox compatible?
Yes, up to 40% O2 outside the EU. Within the EU, anything above 21% O2 must use an M26 connection.
Can the second stage be used left or right handed?
Yes. The second stage is reversible for either a left or right hand gas supply configuration.
Why does hose routing matter?
Good hose routing improves comfort, streamlining, and setup practicality. The MTX-RC includes five medium-pressure ports, four on a rotating turret, plus two angled high-pressure ports to help optimize routing.
Is the regulator comfortable to use with gloves?
It is designed with cold-water use in mind and includes large, easy-to-use controls such as the oversize breathing effort adjuster and simple venturi lever, which help when diving with gloves.
What if I am not sure this is the right Apeks regulator for me?
Contact us before ordering. We can help you compare options, check compatibility, and point you toward a better fit if your diving style or environment calls for something different.
Buy with Confidence
The Apeks MTX-RC is for divers who want more than a basic regulator. It is for those who need dependable performance in colder water, value robust engineering, and want equipment that feels ready for serious use rather than occasional convenience.
If your diving demands reliability, adjustability, and confidence in tougher conditions, this is the kind of upgrade that makes sense. You are not just buying a regulator. You are choosing a piece of life-support equipment designed to stay composed where weaker options can feel less reassuring.
Choose the Apeks MTX-RC for confident diving in demanding conditions
Ideal for cold water divers, advanced recreational divers, and anyone investing in premium regulator performance that is built to go further.
Still exploring? Browse our full Apeks Regulators range or discover more in our Diving Regulators collection.
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