XTX40 controller with DS4

The APEKS XTX40 with DS4 first stage is a compact technical scuba regulator, appreciated in the technical diving community for its reliability and robustness. The DS4 first stage, without a rotating turret, offers a fixed, solid configuration, ideal for divers who prefer a simple and efficient system. The Over-Balanced Diaphragm design allows the average pressure to increase faster than the ambient pressure as depth increases, resulting in superior performance at depth. The Environmental Dry system prevents water ingress and ice formation, making this regulator suitable for cold water diving. The XTX40 with DS4 is a reliable diving equipment for technical diving, stage cylinder or redundant configurations.

Main benefits

• Scuba regulator with compact DS4 first stage
• Over-Balanced Design for Deep Performance
• No rotating turret – fixed and robust configuration
• Environmental Dry Kit Standard
• Suitable for technical and cold water diving

Technical specifications

First stage – DS4

• Connections: DIN and Yoke
• Type of first stage: Over-balanced diaphragm design, environmentally sealed
• Body Type: Cylindrical
• Number of HP ports: 1 (7/16" UNF)
• Number of MP ports: 4 (3/8" UNF)
• Environmental Dry Kit: Standard
• First stage exterior: Chrome over marine brass
• Orientation: Convertible LH or RH
• Cold water use: Yes

Second stage – XTX40

• Type of second stage: Pneumatically balanced
• Opening Effort Control Knob: No
• Integrated Venturi Lever: Yes
• Mouthpiece: Comfo-bite™
• Exhaust tee: Diver Changeable - comes with 1 set
• Heat Exchanger for freezing resistance: Yes
• Hose type: Braided Flexi-hose
• Overall work of breathing (WOB) scores: Avg. 0.70 joules/liter

What does the XTX40 with DS4 package include?

• 1st stage
• 2nd stage
• Hoses

Who is this regulator for?

✔ Technical divers who prefer a fixed first stage without a turret
✔ Twinset or stage cylinder configurations
✔ Cold water diving
✔ Use as main or backup regulator
✔ Divers looking for a robust and time-tested scuba regulator