The DS4 First stage.
The performance of the DS4 first stage is the same as the TX-40 and 50 first stage (DST first stage ) but has no swivel turret for the LP ports.
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
Apeks DS4 / XTX50 Stage Regulator
Apeks XTX 100 Regulator
Apeks XTX 40 DS4 Status Regulator
Apeks XTX 50 Nitrox Regulator
Pneumatically balanced system - reduces breathing effort
Heat exchanger for cold water diving
Integrated Venturi Control
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.
The ATX40 2nd stage and octopus is smaller and 25% lighter than its TX predecessor. This results in less jaw fatigue and less drag.
This pneumatically balanced is ideally suited for an over-balanced Apeks first stage.
The diver has full control of the venturi by means of a lever so as to prevent accidental freeflow when the octopus is not being used.
The excellent coldwater performance of this octopus is due to the highly efficient heat exchanger on the second stage