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Reg. Price: $749.95
Our Price: $689.00
on orders of $35.00 or more.
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Apeks By Aqua Lung XTX40/DS4 Balanced Regulator - DIN - OXYGEN

Now you can get XTX technology in an oxygen model.

This regulator is built for oxygen percentages between 40 – 100%. This compatibility coupled with its excellent reliability make it the choice for technical divers doing high O2 percentage deco stops.


  • This compact first stage has one high-pressure port and four medium-pressure ports
  • Green and yellow cosmetic pieces clearly identify that this regulator is dedicated for high-percentage oxygen use.
  • The first stage is dry-sealed preventing the entry of contaminants as well as ice formation on the main spring.
  • The XTX40 second stage is pneumatically balanced for very easy breathing
  • Due to its innovative Reversible Venturi System (RVS), the second stage can be configured into a right hand or left hand orientation
  • The venturi lever is easy to use even with the thickest of gloves
  • Suitable for coldwater use


Do not attempt to use this product with enriched air until you have obtained training in nitrox use with mixtures containing over 40% O2 by volume, from a nationally recognized training agency.

The Aqualung line of quality regulators  come with 1.)  limited lifetime warranty that will cover the original owner of the product against defects in parts or workmanship for the lifetime of the regulator as long as it is purchased from an authorized dealer (OnlineScuba is an authorized dealer) 2.) regulators are serviced annually by an authorized dealer.


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