Zeagle Onyx Regulator 350-0210 033315

Mfg Part #: 350-0210
Scuba Lab Testers Choice!
  • Lightweight braided hose for great flexibility
  • Balanced 1st and 2nd stage for superior breathing performance
  • Nitrox compatible to 40% (the recreational limits of nitrox)
  • "Diver Adjustable" Air flow
  • "Diver Adjustable" venturi to prevent unwanted free-flow

Customer Reviews for Zeagle Onyx Regulator:

See the top 20 most helpful scuba gear reviews

No reviews found for this product.

Questions and Answers for Zeagle Onyx Regulator:

  • Dave:

    Hello I need some opinions and advice on regulators I have the chance to buy a used reg from a friend it is a zeagle flathead 6 bought in 08 has less than 20 dives on it serviced 14 months ago with no more dives on it for $240.00 or I was thinking of buying a new zeagle onyx cw din I know the fhead 6 is an old model but has it changed that much to the fhead 7? or is the onyx a better built/design since it is newer. In short which reg is superior for the things considered here and which would you buy

    Darrick  (Certified Scuba Instructor at Scuba.com):

    Hello Dave, I would suggest going with the newer reg that will have a warranty attached to it. Where as the warranty with your friends regulator will go away when you buy it from him. But both regulators are very reg's you cant go wrong with either one.

The Onyx regulator outperforms many, much more expensive regulators with outstanding reputations - why? Among many reasons, two stand out:

The internal structure allows direct airflow through the 1st stage, providing lower turbulence for outstanding performance.
Zeagle’s conical precision high-pressure valve provides much greater reliability and service life compared to conventional designs, while improving responsiveness and performance at all breathing rates.
The braided LP hose provides high flow and tremendous abrasion resistance while having great flexibility. The compact exhaust tee, advanced black satin chrome finish and light weight construction give the Onyx a beautiful presence.

Work of breathing at heavy* demand:
0.95 Joule/Liter
*198 (60M) depth, 750 psi inlet, 62.5 RMV (liters per minute respiratory volume)

Like all Zeagle regulators, The Onyx comes factory ready for use with EAN/ NITROX to 40% O2.


5 LP Ports
2 HP Ports
Lighter weight
Stylish black finish

Downstream valve
Balanced Diaphragm
Dive/Pre Dive Venturi Control
Diver Adjustable Breathing Sensitivity
New Compact Profile
Lightweight Braided Hose Length: 30 in. (.76 m)

First Stage Materials: Second Stage Materials:
Body: Brass
O-rings: Buna-N
Seat: Advanced Polymer
HP Valve:
Stainless Steel

Exterior Finish: Advanced Black Satin Chrome
Purge: Flexible Thermoplastic
Case: Thermoplastic
Poppet Seat: Elastomer
O-Rings: Buna-N
Diaphragm: Elastomeric Polymer
Exhaust Valve: Elastomer
Mouthpiece: Silicone

Also available through your Zeagle dealer for the Onyx, is the Cold Water Conversion Kit.

View all Zeagle Regulators

Choose Currency:

Scuba.com, 1752 Langley Avenue, Irvine CA 92614

Click to Call
US and Canada
International 001.949.221.9300