All You Need to Know About the Aqualung Helix Pro Regulator: Key Features
The Aqualung Helix Pro brings together a mix of practical features that make a real difference when you are underwater. It may not be the lightest or the flashiest regulator out there, but it is built to deliver steady breathing, be reliable, and keep you comfortable throughout your dive. Below are the key features of the regulator that stand out most to us.
Auto Closure Device (ACD)
One of the most useful features is the Auto Closure Device. When you remove the regulator from your tank, the inlet automatically seals itself. This helps prevent water, salt, or debris from entering the first stage.
It also helps keep lubrication where it belongs, which means less wear and longer life for your regulator. You will appreciate this feature if you often dive in salt water or if you want to reduce service issues.
Environmentally Sealed First Stage
The first stage is environmentally sealed. This keeps internal parts isolated from the surrounding water. It helps protect against cold-water freezing and shields the mechanism from sand, silt, or salt buildup. If you dive in different conditions, from colder water to murkier environments, this gives you more peace of mind about long-term performance.
Pneumatically Balanced Second Stage
The second stage is pneumatically balanced. This design helps maintain smooth airflow, even as your tank pressure drops during the dive. The result is a consistent breathing effort from start to finish. You do not feel like you need to work harder for each breath as the dive goes on, which makes your time underwater more relaxed and less tiring.
Venturi Control
The regulator comes with a Venturi control lever. You can switch it to reduce free flow at the surface or set it for easier breathing when you are at depth. It is a simple adjustment, but one that makes a clear difference once you get used to it.
Comfo-Bite Mouthpiece
The Helix Pro includes Aqualung’s Comfo-Bite mouthpiece. The palate bridge helps hold the second stage in place with less effort from your jaw. If you tend to get jaw fatigue on longer dives, this mouthpiece can make your dives more comfortable.
Aqualung Helix Pro: Manufacturer's Specification
1st Stage Design: | Diaphragm |
1st Stage Type: | Balanced |
Environmentally Sealed | Yes |
Number of Ports: | 2 High-Pressure (HP), 4 Low-Pressure (LP) |
2nd Stage Type: | Pneumatically balanced |
Adjustable 2nd Stage: | Venturi switch |
Materials: | Chrome-plated marine brass, stainless steel, high-grade polymers |
Weight: | Approx. 948 g (Yoke version with hose) |
Regulator Connection: | Yoke, DIN (300 bar) |
Water Temp Range: | Warm, Temperate |
Our Rating: Aqualung Helix Pro Review
Overall Score
4.3/5
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4.0/5
Comfort & Ergonomics
The second stage is not the lightest on the market, but the Comfo-Bite mouthpiece helps reduce jaw fatigue. Hose routing is straightforward thanks to the four LP ports, and the balance of the second stage makes it comfortable on longer dives.
4.5/5
Breathing Performance & Ease of Use
The Helix Pro delivers steady airflow at a range of depths. The pneumatically balanced second stage keeps breathing effort low, even as tank pressure drops. The Venturi lever works smoothly, giving you more control over performance and preventing free flow at the surface.
4.5/5
Build Quality & Durability
Aqualung’s use of chrome-plated brass and stainless steel makes the first stage solid and corrosion-resistant. The Auto Closure Device protects the inlet from moisture and debris, extending the life of the regulator. Divers report that it holds up well after repeated saltwater dives with regular rinsing.
4.0/5
Maintenance & Serviceability
The Helix Pro is designed for easier servicing with widely available kits from Aqualung dealers. The ACD reduces internal contamination, which can extend service life. Standard service is every two years, which helps lower the overall maintenance burden.
4.5/5
Value for Money
Positioned in the mid-range, the Helix Pro offers solid performance and durability without the premium price tag of Aqualung’s top-end models. For recreational divers, it gives you many of the features you need without overpaying for extras you may not use.
What We Like:
✅ Smooth Breathing Performance
The pneumatically balanced second stage keeps your breathing effort steady from the beginning of your dive until your tank is nearly empty. You do not feel a big change in resistance as pressure drops, which makes your dives more relaxed and less tiring. The Venturi lever gives you added control, especially when preventing freeflow at the surface.✅ Built for Durability
The Helix Pro is made with chrome-plated brass and stainless steel, which hold up well in saltwater. The Auto Closure Device seals the inlet when the regulator is off the tank, preventing water or debris from entering. Over time this extra protection helps extend the life of the regulator and reduces the risk of corrosion.✅ Comfortable Mouthpiece
Aqualung’s Comfo-Bite mouthpiece is a small detail that makes a big difference. The palate bridge helps hold the regulator in place, so you do not need to bite down as hard. On longer dives, this helps reduce jaw fatigue, especially if you are prone to it.What We Don't Like:
❌ Slightly Heavy Second Stage
The second stage is not the lightest in its class. While the Comfo-Bite helps, some divers may still feel the weight after long dives compared to lighter travel regulators.❌ Mid-Range Only
The Helix Pro gives you great features for recreational diving, but it is not designed for technical or deep cold-water use. If you want a regulator that can grow into advanced diving, you might need to look at higher-end models in Aqualung’s lineup.❌ Service Availability Varies
Aqualung service centers are widely available in many dive regions, but not everywhere. If you plan to travel to remote locations, you may find it harder to access official servicing compared to more common brands in those areas.The Verdict
The Aqualung Helix Pro is a solid mid-range regulator that delivers reliable performance and comfort for recreational divers. It combines features like a pneumatically balanced second stage, environmental sealing, and the Auto Closure Device, which you usually see on more expensive models.
If you are a diver who wants dependable breathing, durability, and reduced maintenance worries, this regulator fits the bill. It is best suited for everyday diving in warm and temperate waters, though it can handle cooler conditions with added confidence.
While it is not built for technical or extreme environments, the Helix Pro gives you excellent value if your diving is focused on recreation and travel. For divers looking for a trustworthy workhorse without paying premium prices, this regulator is an easy recommendation.
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Aqualung Helix Pro: FAQ
Frequently Asked Questions
No. The Helix Pro is sold as the primary regulator set. You can add an Aqualung octopus separately, such as the Helix Pro Octopus, which is designed to pair with it.
Yes. While the second stage is a little heavier than travel-specific models, the overall size and weight are manageable. It fits into most regulator bags without issue and is fine for airline travel.
The Helix Pro is best for recreational divers who dive in warm and temperate waters. It can handle cooler dives, but it is not built for extreme cold or advanced technical diving.
Have you tried the Aqualung Helix Pro Regulator? What did you think? Let us know in the comments below! Happy diving!
Aqualung Helix Pro Regulator
The Aqualung Helix Pro delivers steady airflow, strong protection features, and comfort in a mid-range package. A smart choice for divers who want performance without the premium price.
Product Brand: Aqualung
4.3
Pros
- Smooth and consistent breathing performance
- Durable build with Auto Closure Device
- Comfortable Comfo-Bite mouthpiece
- Two-year service interval
- Good value for recreational dive
Cons
- Second stage slightly heavy
- Not suited for technical or extreme cold diving
- Service availability depends on location