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Aqualung Helix DIN Regulator with Octopus

SKU: UDRHDO MFR: RQ135001

Key Features

  • Experience effortless breathing with this Aqualung regulator, designed for reliability.
  • Enjoy smooth, consistent airflow from this balanced regulator at any depth, enhancing safety.
  • Dive confidently with a durable regulator crafted from high-quality, corrosion-resistant materials.
  • Customize your dive with the adjustable 2nd stage, tailoring breathing effort to your needs.
  • Stay streamlined underwater; this compact regulator offers superior performance without bulk.
  • Nitrox compatibility up to 40% O2 means this regulator is ready for a variety of diving scenarios.
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Q&A

Questions & Answers

Frank A : Does it have a cracking effort knob?IAN R : No it does not.
Shopper : Why Did You Choose This?BYRON M : Travel size and weight, environmentally sealed and complete regulator setup with first ,second stage with octo. And aqualung is a common brand serviced at most dive shops

Reviews about this item

Review Summary

2025-07-29T05:46:15

Rated 5 out of 5

Love this reg set

I have really enjoyed this set up. Its top quality for the price. Quickly becoming an Aqualung fan.

Steven W.

Aqualung Helix DIN Regulator with Octopus Specifications

Regulator

Regulator

Jump to...
  • 1'st Stage Type

    Over-Balanced Diaphragm

  • LP Ports

    Four, 3/8"-24 UNF Thread

  • HP Ports

    Two, 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" Thread

  • Hose Length

    29" (73.7cm)

  • Total Weight

    23.35 oz (662g)

Octopus

Jump to...
  • 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

    Techno-Polymer, Silicone

  • Hose Thread

    3/8" Thread

  • Hose Length

    39" (99cm)

  • Total Weight

    7.3 oz (207g)

  • UPC Code

    191649070933

About Aqualung Helix DIN Regulator with Octopus

FEATURED REVIEWS

Love this reg set

By Steven W.

I have really enjoyed this set up. Its top quality for the price. Quickly becoming an Aqualung fan.

- Aqualung Helix DIN Regulator -
This mid-range regulator is a balanced first and second stage design, it is part of Aqualung's core range. When comparing performance with price, Helix is a must have. It represents the DNA of the Aqualung regulators. The Aqualung Helix can be reviewed every 2 years. Balanced diaphragm first stage provides superior, consistent performance. "T" shape body for streamlined hose positioning. In-line ergonomic Venturi knob let's make precise adjustments, even while wearing gloves. The Helix regulator's provides amazing breathing, coupled with its generous features, and at an attractive mid-range price, provides the best value of any regulator offered today. The balanced diaphragm chrome plated marine brass first stage provides superior, consistent performance and the pneumatically-balanced second stage results in smooth, easy breathing.

Available in DIN with a service pressure of 300 bars (4350 psi) maximum. The T-shape of the first stage optimizes the location of the 4 low-pressure (LP) ports and 2 high-pressure (HP) ports. The Helix Core uses parts that are common to other Aqualung models for easier servicing. The easy-to-grip venturi lever prevents unwanted free-flow at the surface while giving a performance boost at depth. The Helix Core regulator is compatible with EAN 40 new, out of the box. Equipped with Aqualung's patented Comfo-Bite mouthpiece installed with standard bite wing mouthpiece, along with a reusable mouthpiece clamp. The regulator weighs 23.35 oz (662g) and comes with a 29" (73.7cm) low pressure 3/8" threaded hose and owner's manual.


- Aqualung Helix Octopus -
The Aqualung Helix Octopus provides the same great performance as the Helix Pro primary second stage with its pneumatically-balanced second stage that results in smooth, easy breathing. Thanks to its highly efficient heat exchanger, it is up to the rigors of cold-water diving. With its 39" (99cm) Hi-Viz yellow hose and front cover, it will be ready to provide life-sustaining air in an out-of-air situation. The easy-to-grip venturi lever prevents unwanted free-flow at the surface while giving a performance boost at depth. 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. The Helix Octopus is compatible with EAN 40 new, out of the box. Equipped with a silicone mouthpiece with ergonomic bite wings. Octo weighs 7.3 oz (207g) without the hose and comes with an owner's manual.

Aqualung Helix DIN Regulator with Octopus Features

  • Helix DIN Regulator:~ Discontinued
  • Mid-Range Regulator
  • Balanced First & Second Stage Design
  • Part of Aqualung's Core Range
  • Comparing Performance w/Price, Helix Is-A-Must-Have!
  • Represents DNA of Aqualung Regulators
  • Two-Year Service Review Design
  • Nitrox Ready Out-of-the-Box
  • Hose: 29" (73.7cm) with 3/8" Threads
  • Weight: 23.35 oz (662g)
  • Owner's Manual
  • First Stage:
  • Compact Balanced Diaphragm First Stage
  • Chrome Plated Marine Grade Brass Construction
  • Inherently Environmentally Sealed to Keep-Out Contaminates
  • Delicate Internal Parts Not Exposed to Contaminants: Salt, Sand, Chlorine or Pool Acids
  • Requires Less-Maintenance
  • T-Shape: Less Brass Lighter Weight, More-Compact
  • Four, 3/8" UNF LP Ports
  • Two, 7/16 UNF HP Ports
  • Ports Angled for Optimum Hose Configuration
  • Service Pressure: 300 bars (4350 psi)
  • Second Stage:
  • Pneumatically Balanced Design
  • Delivers Gas at Constant Pressure
  • Easy Work-of-Breathing
  • Breathing Effortless Independent of Depth or Tank Pressure
  • Venturi Switch:
    Helps Prevent Free-Flow
    Works at Surface & when Regulator Out-of-Diver's Mouth
    Easy-to-Grip Venturi Lever
    Performance Boost at Depth
  • Comfo-Bite Mouthpiece Installed
  • Mouthpiece Reduce Jaw Fatigue
  • Standard w/Bite Wings In-Box
  • Reusable Mouthpiece Clamp
  • Helix Pro Octopus:
  • Pneumatically Balanced Design
  • Delivers Gas at Constant Pressure
  • Easy Work-of-Breathing
  • Breathing Effortless Independent of Depth or Tank Pressure
  • Venturi Switch:
    Helps Prevent Free-Flow
    Works at Surface & When Regulator Out-of-Diver's Mouth
    Easy-to-Grip Venturi Lever
    Performance Boost at Depth
  • Heat Exchanger (patented):
    Surrounds Valve Mechanism
    Dissipates Cold Caused by Gas Expansion
    Draws-In Warmth of Ambient Water
  • Nitrox Ready Out-of-the-Box
  • Mouthpiece: Silicone w/Ergonomic Bite Wings
  • Hi-Viz Yellow 39" (99cm) Hose & Front Cover
  • Ready to Provide Life-Sustaining Air In-Out-of-Air Situation
  • Weight (w/o Hose): 7.3 oz (207g)
  • Owner's Manual

Warranty Information

This product has a limited lifetime warranty.

Key Features

  • Experience effortless breathing with this Aqualung regulator, designed for reliability.
  • Enjoy smooth, consistent airflow from this balanced regulator at any depth, enhancing safety.
  • Dive confidently with a durable regulator crafted from high-quality, corrosion-resistant materials.
  • Customize your dive with the adjustable 2nd stage, tailoring breathing effort to your needs.
  • Stay streamlined underwater; this compact regulator offers superior performance without bulk.
  • Nitrox compatibility up to 40% O2 means this regulator is ready for a variety of diving scenarios.

What's in the box:

  • 1'st Stage Regulator
  • 2'nd Stage Regulator
  • 2'nd Stage Octopus with Hose
  • Low-Pressure Hose
  • Owner's Manual
  • MFG Lifetime Limited Warranty