Balanced second stage with a Venturi switch
The second stage is balanced. Its Venturi switch has MIN and MAX settings and works even in gloves, and opening channels in the cover reduce cracking effort by 20%, according to Aqualung.
Helix
Aqualung's mid-range regulator, designed and made in France
Aqualung calls the Helix a mid-range model, built around durability and performance, the core DNA of its regulators. The second stage is balanced, with a Venturi switch, an air channel deflector that Aqualung says lowers exhalation effort, and opening channels in the cover that reduce cracking effort by 20%, according to Aqualung. The braided hose is flexible, comfortable and easy to travel with. Aqualung lists a work of breathing of 0.85 J/L and calls for a service every 2 years. Designed and made in France.
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Highlights
Air channel deflector for easier exhaling
The air channel deflector directs airflow evenly and, Aqualung says, lowers exhalation effort. Aqualung lists a work of breathing of 0.85 J/L for the Helix.
First stage with ports in a T
The first stage has two HP ports and four MP ports set in a T shape, and a dust cap protects the inlet fitting. Maximum working pressure is 300 bar in DIN and 232 bar in yoke.
Comfo-Bite mouthpiece and braided hose
It comes with a Comfo-Bite mouthpiece that is interchangeable and held by a reusable clip. The braided hose gives flexibility, comfort and easy transport.
For warm water, serviced every 2 years
Aqualung marks the Helix for warm water and calls for a service every 2 years. It is designed and made in France.
Who it is for
Great for
- Divers who want a mid-range regulator built around durability and performance: that is how Aqualung places the Helix, with a service every 2 years
- Travelling divers: the braided hose is flexible and easy to transport
- Warm-water divers: Aqualung marks the Helix for warm water
- Nitrox divers: Aqualung rates it up to 40% O₂ when new, out of the box (21% in Europe)
Maybe not for
- Cold-water divers: Aqualung marks the Helix for warm water, and the Helix Pro for cold and warm water; ask us on LINE
Specifications
- 1st stage weight
- Yoke 700 g (25 oz) / DIN 475 g (17 oz)
- Max working pressure
- DIN 300 bar / Yoke 232 bar
- Ports
- 2 HP (7/16" UNF), 4 MP (3/8" UNF), set in a T shape
- 2nd stage
- Balanced; Venturi switch (MIN/MAX); air channel deflector; cover channels cut cracking effort by 20%
- Work of breathing
- 0.85 J/L
- Nitrox
- Up to 40% O2 when new, out of the box (21% in Europe)
- Mouthpiece
- Comfo-Bite, interchangeable with a reusable clip
- Hose
- Braided
- Service
- Every 2 years (Aqualung)
- Origin
- Designed and made in France
FAQ
DIN or INT: which one should I choose?
It is how the first stage connects to the tank valve, so match the valves you dive with. Aqualung lists the first stage at 475 g (17 oz) in DIN and 700 g (25 oz) in INT (yoke), with a maximum working pressure of 300 bar in DIN and 232 bar in yoke. Not sure? Ask us on LINE.
How is it different from the Helix Pro?
Both have a balanced second stage with a Venturi switch and a braided hose. On the Helix Pro, Aqualung lists an Auto Closure Device (ACD), a permanent dry chamber and a heat exchanger, and marks it for cold and warm water; the Helix is marked for warm water. Aqualung gives first-stage weights of 700 g (INT) and 475 g (DIN) for the Helix, and 740 g and 525 g for the Helix Pro. Still deciding? Ask us on LINE.
How easy is it to breathe?
Aqualung lists a work of breathing of 0.85 J/L. Opening channels in the cover reduce cracking effort by 20%, according to Aqualung, and the air channel deflector lowers exhalation effort.
How often does it need a service?
Aqualung says it is serviced every 2 years. For questions about servicing, ask us on LINE.
Can I use it with nitrox?
Aqualung lists it as compatible up to 40% O₂ when new, out of the box (21% in Europe). Planning to dive nitrox? Ask us first.
Is it OK for beginners?
Aqualung does not name a skill level for the Helix, but calls it a mid-range model, and the only second-stage control it lists is the Venturi switch. The model Aqualung says is especially suited for beginners is the Titan. Just starting and not sure which one to pick? Ask us on LINE.
How many ports does it have?
Two HP ports (7/16" UNF) and four MP ports (3/8" UNF), set in a T shape.
