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APEKS ATX40 DS4 Yoke Regulator

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Before the XTX range of regulators came along, the ATX models ruled the seas. The ATX40 is still available today and offers a fully balanced first and second stage that...
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Availability:
Sold Out

Key Features

Designed for cold water performance
Fully balanced first and second stage
Compatible with EAN40 out of the box
Large and easy to operate buttons

Product Overview

Before the XTX range of regulators came along, the ATX models ruled the seas. The ATX40 is still available today and offers a fully balanced first and second stage that are suitable for cold-water use below 50°F (10°C) and is compatible with EAN40 out of the box. This high-performance regulator boasts an over-balanced first stage coupled with a pneumatically balanced second stage. The smooth, quiet breath is sure to enhance your diving enjoyment. Suitable for cold-water use thanks to its first stage environmental dry seal and second stage heat exchanger.

The APEXS ATX40 uses the DS4 first stage. 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 rate faster than ambient. This results in superior performance at depth. An environmental dry system keeps water out of the main spring chamber thus preventing ice build-up and keeping silt and contamination out. The chromed marine brass first stage has four medium-pressure (3/8" UNF) ports and one high-pressure port (7/16" UNF).

The XTX purge buttons are large and easy to operate even with thick gloves. These hoses are lighter weight, more flexible and more durable. Pneumatically-balanced second stage results in smooth, easy breathing. The integrated venturi control provides a performance boost at depth while preventing unwanted free flow at the surface. An extremely efficient exhaust valve improves the breathing performance of the regulator. The Comfo-bite mouthpiece virtually eliminates jaw-fatigue. A heat exchanger (patented) which surrounds the valve mechanism, dissipates the cold caused by gas expansion while drawing in the warmth of the ambient water. Offers a compact, integrated exhaust tee. Regulator weighs 39.86 oz. (1130 g) and comes with an owner's manual.

Warranty Information

This product has a limited lifetime warranty

Features

  • Before XTX Range of Regulators Came Along, ATX Models Ruled the Seas
  • ATX40 is Still Available Today
  • Highly Technical Design
  • Total Weight: 39.86 oz. (1130 g)
  • Nitrox Ready Up to 40% O2 Out-of-the-Box
  • Suitable for Cold Water Use Below 50°:F (10°:C)
  • Owner's Manual
  • First Stage: APEXS ATX40 DS4
  • Unique Over-Balanced Diaphragm First Stage
  • Chromed Marine Grade Brass Construction
  • Environmentally Sealed to Keep-Out Contaminates
  • Delicate Internal Parts Not Exposed to Contaminants: Salt, Sand, Chlorine or Pool Acids
  • Requires Less-Maintenance
  • Secondary Environmental Diaphragm Membrane:
    First Stage Completely-Sealed-Off
    Dry Ambient Pressure Chamber
    Second-Layer of Corrosion Resistance and Prevention of Freezing in Cold-Water-Use
  • Four 3/8 UNF (Unified National Fine) Medium Pressure Ports
  • One 7/16 UNF High Pressure Port
  • HP & MP Ports Angled for Optimum Hose Routing
  • Second Stage: APEXS ATX40
  • Pneumatically-Balanced Second Stage
  • Smooth, Easy Breathing
  • Purge Button:
    Large and Easy to Operate
    2-Stage Progressive Purge
    Press Purge On-Side for Lower Flow Rate
    Useful for Filling Lift Bags etc.
    Press Center for Full Purge
    Great for Regulator Clearing etc.
  • Large Venturi Lever w/Soft Touch Rubber Grip
  • Silicone Exhaust Valve Improves Breathing Performance
  • Comfo-Bite Mouthpiece Virtually Eliminates Jaw-Fatigue
  • Heat Exchanger (patented):
    Dissipates Cold Caused by Gas Expansion
    Draws in Warmth of Ambient Water
    Helps Prevent Freeze-Ups
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Product ID

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Key Features

• Designed for cold water performance
• Fully balanced first and second stage
• Compatible with EAN40 out of the box
• Large and easy to operate buttons

What's in the Box

• 1'st Stage
• 2'nd Stage
• Regulators
• Low Pressure Hose
• Owner's Manual

Specifications

1'st Stage Type Over-Balanced Diaphragm
LP Ports Four, 3/8-24 UNF Thread
HP Ports One, 7/16-20 UNF Thread
Adjustable 2'nd Stage Yes, Dive/Pre-Dive Venturi (Free Flow) Switch
Nitrox Compatible Yes Up To 40% O2
2'nd Stage Type Pneumatically Balanced Downstream Demand Valve
Materials First Stage: Chrome Plated Brass, Second Stage: Techno-Polymer, Silicone
Hose Thread 3/8
Hose Length Not Specified by Manufacturer
Total Weight 39.86 oz. (1130 g)

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