Apeks XL4+ Regulator
Apeks XL4+ Regulator DIN
Apeks XL4+ Regulator Second Stage
Apeks XL4+ DIN First Stage
Apeks XL4+ Regulator A-clamp
Apeks XL4+ A-clamp First Stage

Apeks XL4+ Regulator

Sale price£449.00 Regular price£528.00
Save £79.00

The Apeks XL4+ regulator is a compact regulator suitable for diving in all environments, including cold water locations. Its design and low weight help reduce jaw fatigue on long dives. The XL4+ also makes an ideal stage regulator, perfect for the technical exploration diver with a large amount of equipment.

DIN or A-Clamp

DIN or A-Clamp


Dispatched in 1 to 2 days

Contact Form & Details

How can we help?

If you need to contact us for any issue or assistance, you can do so online by filling out the online Contact Form, emailing us at sales@dirdirect.com or calling us on +44(0)1305 824 555. If it's about a purchase you've made for us please also include your order number.

Our brick-and-mortar store Underwater Explorers based on Portland, Dorset is staffed 7 days a week, including weekends and bank holidays. As it's an active store visited by divers from around the country and world regularly, if we can't make it to the phone for any reason please leave a message and we'll get back to you asap.

Any queries are usually answered the very same day and at most within 24 hours.


Why Portland?

We’re located on the Isle of Portland (in Dorset) because Portland has been one of the most popular scuba diving locations in the United Kingdom even before we set up operations here back in the year 2000.

On one side, we’re minutes away from the sheltered waters of Portland Marina and Harbour, while on the other, it’s just a brief walk to reach our famous scuba diving destination Chesil Cove and start of the 16-mile-long Chesil Beach.  

Portland’s location makes it ideal for scuba diving, freediving, snorkelling and other surface water sports activities. 

Check out how many wrecks we have around here by clicking on Scimitar Diving's Wreck & Dive Sites chart!

Alongside dive clubs, many instructors and dive schools travel here to train and offer scuba diving certification ranging from open water diver to mixed-gas tech diving or rebreather diving levels.

Whether you’re doing a boat dive from Portland Marina or Castletown or a shore dive at Chesil Cove, Portland is well known for offering many possibilities: Reef diving to wreck diving and night diving, underwater photography or underwater videography. Anything other than cave diving is possible here.

Likely being the best-stocked diving shop in the UK, at Underwater Explorers we offer in-store scuba diving equipment advice and sales, as well as gas fills, to locals and visitors (read About Us).

But... If you’re googling “scuba diving shop near me” like some, look no further, there's DirDirect online.

Here at DirDirect, we list our cutting-edge equipment for worldwide delivery and we’ve got you covered whatever your level of diving: We’re your local dive store wherever you are in the world.

All that with over 20 years of experience especially in technical diving, from training to equipment, advice and sales.


Underwater Explorers, Unit 1, Maritime Business Centre
Mereside, Portland, Dorset, DT5 1FD


Updated for 2023 with a second stage heat exchanger, the Apeks XL4+
 Regulator is compact and lightweight regulator. It is suitable for diving in all environments, including cold water locations.

If you need a lightweight regulator for travelling, Apeks XL4+
Regulator won’t disappoint you.

Its design and low weight help reduce jaw fatigue on long dives. The XL4+ Regulator also makes an ideal stage regulator for the exploration diver.

Apeks XL4+ 
Regulator includes

  • XL4+ first stage
  • XL4+ second stage
  • Apeks Flexi 29" regulator hose

Over-balanced First Stage

Break through, innovative over-moulded first-stage endcap and environmental diaphragm help to prevent ice build-up that can cause first stage free flow in extreme circumstances. Also protects the Apeks XL4+ First Stage Regulator from impact damage.

The large surface area heat exchanger diaphragm clamp helps increase the gas temperature inside the first stage, improving cold water performance.

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.

  • 2 HP ports and 4 MP ports
  • Environmentally sealed
  • Over balanced diaphragm design
  • DIN fitting

XL4+ Second Stage

The Apeks XL4+ second stage regulator is a compact and lightweight. Its design and low weight help reduce jaw fatigue on long dives.

Comfobite mouthpiece has a unique bridge that fits across the upper palate. It does not require bite pressure to stay in place. Re-useable mouthpiece clip makes it simple to change mouthpieces in the field.

  • High performance pneumatically balanced lever operated poppet valve.
  • Large, over moulded self-flushing and controllable purge button.
  • Ergonomic Venturi lever disrupts the airflow inside the 2nd stage to prevent accidental free flows at the surface. 
  • Standard metallic hose connection for interchangeability.
  • Durable and flexible rubber exhaust tee provides excellent bubble diversion.
  • UV inhibitors to help prevent discolouration of the white materials.
    SKU: RT111121