DirDirect :: Regulators & Hoses :: First Stages :: Apeks XL4 First Stage Regulator

Apeks XL4 First Stage Regulator

Apeks XL4 First Stage Regulator
Apeks XL4 1st Stage - DIN Apeks XL4 1st Stage - DIN

The Apeks XL4 regulator is designed with the cold-water exploration diver in mind. Weighing in at only 905g (DIN version), the XL4 was the lightest ever cold-water 1st stage produced by Apeks - greatly reducing the risk of a free flow in low temperatures due to exclusive design.

SKU RT111112
£195.00 £216.00
save 10%

New from Apeks, the XL4 First Stage is designed with the cold-water exploration diver in mind - great performance without the weight...

(Click Apeks XL4 with regulator hose for First and Second stage sets)

Weighing in at a tiny 905g (DIN version), the XL4 First Stage is the lightest ever cold-water regulator produced by Apeks. Light on weight doesn’t mean light on features though. This compact regulator includes Apeks' latest cold-water innovation, an over-moulded first stage endcap that reduces ice build-up around the First Stage. This technology greatly reduces the risk of a free flow in low temperatures. Cold water performance is further improved by heat exchangers on the First Stage (as well as the XL4 Second Stage).

Ideal for technical divers looking to reduce the weight of their setup, the XL4 can also be used as a neat and compact regulator for stage cylinders, perfect for the technical exploration diver with a large amount of equipment.

The XL4 is a high-performance option for divers serious about weight savings.

Apeks XL4 1st stage

Features and Benefits

  • Compact machined First Stage based on the expedition tested Apeks DS4 platform.
  • Break through, innovative over moulded 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.
  • Large surface area heat exchanger diaphragm clamp helps increase the gas temperature inside the First Stage, resulting in improved 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.
DIN 905g (2 lb) • Yoke 1041g (2.3lb)
Max working pressure:
First Stage DIN 300 bar (4351 psi) • Yoke 232 bar (3365 psi)
Required Servicing:
First Stage: 2 years (with annual inspection)
Nitrox/Oxygen Compatibility:
Out of the box up to 40% outside the EU - Upto 100% once O2 cleaned
Apeks XL4 1st Stage
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