The ATX40/DS4 features a smaller, lighter, lower profile 2nd stage than the TX40 2nd stage.

Apeks believe that your regulator should be as flexible as you are. So the ATX40 retains our well proven diver adjustable venturi together with a 'technician-adjustable' balanced 2nd stage and balanced 1st stage.

The combination of this second stage and the DRY SEALED first stage offers an excellent regulator for diving anywhere in the world at a very competitive price. The design of our 2nd stage offers a smooth breathe which enhances your dive enjoyment.

No swivel turret
4 medium pressure ports, 4 x 3/8" UNF
1 high pressure ports, 1 x 7/16" UNF
Environmentally dry sealed system
Polished chrome finish
Balanced for superior performance
Second Stage
Pneumatically balanced system - reduces breathing effort
Heat exchanger for cold water diving
Integrated Venturi Control
Micro adjuster
Extremely efficient exhaust valve
Compact integrated exhaust
25% lighter than TX models
Comfo Bite mouthpiece - for comfort and to reduce jaw fatigue
The package also includes an ATX40 octopus with yellow face and 91cm yellow hose aswell as the regulator with standard 74cm hose.