The Zeagle Onyx w/ ZO Regulator is a second-stage regulator from Gul – the piece that delivers air to your mouth on demand. Balanced and responsive, it breathes effortlessly at depth, making every breath as easy as the last whether you’re cruising the reef at Mabul’s world-class visibility or hovering in the blue.
Technical Specifications
| Specification | Details |
| Brand | Gul |
| Product | Zeagle Onyx w/ ZO Regulator |
| Stage | 2nd Stage |
| Type | Air balanced |
| Material | Chrome / Brass |
| Connection | DIN / Yoke |
| Best For | Recreational diving |
Key Features
- Balanced demand valve: Delivers air smoothly and effortlessly at any depth.
- Adjustable cracking pressure: Fine-tune the breathing resistance to your preference.
- Comfortable mouthpiece: Silicone mouthpiece shaped for long dives without jaw fatigue.
- Purge button: One-touch clearing keeps the regulator ready to breathe.
Suited for Malaysian Dive Sites
The Zeagle Onyx w/ ZO Regulator is built to perform across Malaysia’s best underwater destinations. Whether you’re exploring Mabul’s world-class visibility, or heading to new reefs and wrecks, this gear delivers the reliability and comfort you need on every dive.
Care & Maintenance
- Rinse after every dive.
- Purge a few times before and after each dive to flush sand.
- Replace the mouthpiece when it starts to harden or crack.
- Service alongside the first stage – they’re a system.
Final Verdict
Every breath underwater starts here. The Zeagle Onyx w/ ZO Regulator delivers smooth, effortless air at any depth – exactly what you want from a second stage.





Leah Wong –
I’ve had great experiences using the ZO Regulator. The price point of 620 was worth the quality and performance I’ve experienced with this regulator. I’ve used it for multiple dives and it has consistently provided a smooth breathing experience. I would highly recommend this product to all scuba diving enthusiasts.
Aidan Tan –
Does the ZO Regulator require regular maintenance or is it mostly self-sustaining? Have you noticed any decrease in performance due to usage?
Junhao Lo –
Thank you for your question about the Zeagle Onyx w/ ZO Regulator! The ZO Regulator is designed to be user-friendly and low maintenance. We recommend periodic maintenance tasks, such as replacing the o-ring and cleaning the regulator, to ensure optimal performance. However, the regulator is generally self-sustaining and does not require frequent adjustments. In terms of performance decrease, we’ve had great feedback from customers who’ve used the regulator extensively, and there haven’t been any significant issues. Nevertheless, it’s always a good idea to follow the manufacturer’s guidelines for maintenance and upkeep to ensure the regulator continues to perform well. Would you like more information on maintenance procedures?
Jacey Koh –
The Zeagle Onyx is an excellent regulator for recreational scuba diving enthusiasts. Its user-friendly interface and compact design make it a great addition to any scuba diving kit. The price point of 620 seemed reasonable given the quality of the product.
Cavin Lee –
I’m extremely impressed with the build quality of the Zeagle Onyx. It felt solid in my hands and the materials used seemed top-notch. However, I did encounter a minor issue with the valve. The O-ring came loose on the 5th dive, which made it hard to breathe. The issue was quickly resolved by tightening the valve but it did cause some inconvenience.
Jeraldine Ng –
This is an outstanding regulator suitable for freedivers and scuba divers alike. Its ergonomic design and high-quality materials have impressed me.
Julian Wong –
Why does the regulator not come with an overpressure protection valve?
Imran Hanafiah –
Thank you for your review of the Zeagle Onyx w/ ZO Regulator, Julian. I’d like to clarify that the ZO 2nd Stage Regulator on this product does not come with an overpressure protection valve (OPV) by default. However, OPVs can typically be added or installed by a certified technician for an additional cost. Please note that Zeagle does offer a version of this regulator with an OPV included, which can be found on our website. I appreciate your feedback and hope this information is helpful.
Lavina Goh –
This regulator has been a game-changer for my diving experiences. The ZO 2nd stage regulator provides excellent performance, even at depths.
Evelyn Sim –
I’m a huge fan of freediving and this regulator has exceeded my expectations. The build quality, the materials used, and the performance all top-notch.
Celine Tan –
I have a concern about the weight of the regulator. Is it the lightest option available in the market?
Imran Hanafiah –
Thank you for your review of the Zeagle Onyx w/ ZO Regulator. The weight of the regulator is a great point to consider, and we appreciate your question. The Zeagle Onyx w/ ZO Regulator does indeed have a compact design, but it may not be the lightest option available on the market. If you’re looking for an extremely lightweight regulator, you may want to consider other options from manufacturers like Apeks, Mares, or TUSA. However, the Zeagle Onyx has a great balance of weight, performance, and durability, making it a popular choice among scuba divers. If you have any further questions, feel free to ask and we’ll do our best to assist you.
Benedict Lee –
I purchased this regulator but have yet to see any improvements over my old BCD. Was I just sold a subpar product?
Junhao Lo –
Thank you for your review and for choosing our Zeagle Onyx w/ ZO Regulator. We apologize if you’re not experiencing the improvements expected from our product. Our regulators are designed to provide high-quality performance, but we understand that user expectations and needs can vary. Could you please contact our customer service at [support email] so we can discuss further and determine the best solution for you? Additionally, your feedback will help us improve our future products.
Ethan Chua –
Are there any upgrade options or additional components available for the Zeagle Onyx? Would this product be suitable for technical diving where precise control over breathing is critical?
Natalia Tan –
What is the weight of the ZO Regulator when fully assembled? Would it be suitable for deep-sea diving as its weight might be significant.
Junhao Lo –
Thank you for your question about the Zeagle Onyx w/ ZO Regulator. According to our product information, the weight of the ZO Regulator is approximately 3.3 pounds when fully assembled. We understand your concern about its weight being significant for deep-sea diving, but we believe it’s still suitable for such activities. The regulator’s compact size and durable build make it an excellent choice for divers of all levels. However, we recommend consulting with a diving professional to assess any potential impact of the regulator’s weight on your specific diving needs. We appreciate your feedback and would be happy to help you further.