Helix Compact Pro Octopus

A small, compact octopus for your next dive trip

An octopus is a spare second stage on its own hose. If your buddy has an air emergency, they can breathe from it. Aqualung made the Helix Compact Pro Octopus small and compact for your next dive trip, whether or not you own a Helix Compact Pro or Helix Compact regulator. Its high-visibility yellow hose gives quick identification in an emergency, and it is braided, flexible and easy to transport. It is pneumatically balanced, with a Venturi switch you can work in gloves and a heat exchanger. Aqualung lists a work of breathing of 1.25 J/L. Designed and made in France.

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Highlights

Small and compact, for travel

Aqualung made this octopus small and compact for your next dive trip, and marks it for light weight and travel, whether or not you own a Helix Compact Pro or Helix Compact regulator.

A yellow braided hose, quick to find and easy to pack

The 1 m braided hose and the front cover are yellow. Aqualung says the high-visibility yellow hose gives quick identification in an emergency, and that the braided hose gives flexibility, comfort and easy transport.

Cover channels against free-flow in strong current

Wide radial openings in the cover let water flow sideways over the diaphragm. Aqualung says they prevent free-flow when diving in strong currents and reduce cracking effort by 20%. It is pneumatically balanced, and Aqualung lists a work of breathing of 1.25 J/L.

A Venturi switch you work in gloves

Set it to MIN for the least assistance and a higher inhalation effort, ideal to avoid free-flow. Set it to MAX for the most assistance and a lower inhalation effort. The overmolded lever works even in gloves.

Comfo-Bite mouthpiece and heat exchanger

The Comfo-Bite mouthpiece has a palate bridge and is made of hypoallergenic silicone. It swaps without tools and is held by a reusable clip. There is a heat exchanger, and Aqualung marks it for cold and warm water.

Who it is for

Great for
  • Travelling divers: Aqualung made it small and compact, marks it for light weight and travel, and the braided hose packs easily
  • Divers with or without a Helix Compact Pro or Helix Compact: Aqualung offers this octopus for dive trips either way; ask us on LINE to check it against the first stage you use
  • Cold-water divers and divers in gloves: Aqualung marks it for cold and warm water, it has a heat exchanger, and the Venturi switch works in gloves
  • Nitrox divers: Aqualung rates it up to 40% O₂ when new, out of the box (21% in Europe)
Maybe not for
  • Divers looking for a complete regulator: this page is the octopus only, with no first stage. For the full set, see the Helix Compact Pro or Helix Compact regulator, or ask us on LINE
  • Divers who want a lower listed work of breathing: Aqualung lists 1.25 J/L for this one and 0.7 J/L for the Leg3nd Octopus; ask us on LINE

Specifications

Type
Octopus (alternate second stage), downstream valve, pneumatically balanced; small and compact
Venturi switch
MIN (less assistance, helps avoid free-flow) / MAX (more assistance, easier inhalation); overmolded, works in gloves
Cover opening channels
Wide radial openings let water flow sideways over the diaphragm: prevent free-flow in strong current, cracking effort 20% lower
Heat exchanger
Yes
Work of breathing
1.25 J/L
Nitrox
Up to 40% O2 when new, out of the box (21% in Europe)
Mouthpiece
Comfo-Bite (palate bridge, hypoallergenic silicone), swaps without tools; reusable clip
Hose
1 m yellow braided hose: flexible, comfortable, packs easily; yellow front cover
Made for
Travel; for owners of a Helix Compact Pro, a Helix Compact or neither
Origin
Designed and made in France
In the box
Helix Compact Pro octopus with a 1 m yellow braided hose and yellow front cover
Details and specs from the official AQUALUNG website ↗

FAQ

What is an octopus for?

An octopus is a spare second stage on its own hose from your regulator's first stage. If your buddy has an air emergency, they can breathe from it. Aqualung makes the hose high-visibility yellow for quick identification in an emergency.

Do I need a Helix Compact Pro regulator?

Aqualung offers it for your next dive trip, whether or not you own a Helix Compact Pro or Helix Compact regulator. This page is the octopus only, with no first stage. Want to check it suits the first stage you use? Ask us on LINE.

Helix Compact Pro Octopus or Helix Pro Octopus: what is the difference?

Both are pneumatically balanced, with a Venturi switch, cover opening channels and a heat exchanger, and Aqualung lists the same work of breathing of 1.25 J/L. The Helix Compact Pro Octopus is the one Aqualung calls small and compact, marks for light weight and travel, and puts on a braided hose. For the Helix Pro Octopus, Aqualung lists a lip shield. Still deciding? Ask us on LINE.

Can I use it in cold water?

Aqualung marks it for cold and warm water. It has a heat exchanger, and the Venturi switch works in gloves. Planning very cold dives? Ask us on LINE first.

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.

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