The Apollo Bio A-230 Brass B.F NRX Bio A-230 Brass B.F NRX with adjustable 2nd stage is a second-stage regulator from Apollo – 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 Redang’s shallow reef flats or hovering in the blue.
Technical Specifications
| Specification | Details |
| Brand | Apollo |
| Product | Bio A-230 Brass B.F NRX Bio A-230 Brass B.F NRX with adjustable 2nd stage |
| 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 Apollo Bio A-230 Brass B.F NRX Bio A-230 Brass B.F NRX with adjustable 2nd stage is built to perform across Malaysia’s best underwater destinations. Whether you’re exploring Redang’s shallow reef flats, 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 Apollo Bio A-230 Brass B.F NRX Bio A-230 Brass B.F NRX with adjustable 2nd stage delivers smooth, effortless air at any depth – exactly what you want from a second stage.




Jonathan Lim –
I’m impressed with how well the adjustable 2nd stage works. I could really feel the difference when adjusting the airflow during my dives, especially in stronger currents. No issues with free flow at all.
[email protected] –
Thank you, Jonathan, for sharing your experience. We’re glad the adjustable second stage made a difference for you and that the regulator performed reliably in strong currents.
Aisha Yusof –
Is this regulator suitable for use in cold water dives around 10°C? I often go diving in temperate regions and need to make sure it won’t freeze or have issues.
Junhao Lo –
Hi Aisha, yes, the Apollo Bio A-230 Brass B.F NRX is designed with enhanced heat exchange performance and corrosion-resistant materials, making it suitable for cold water environments as low as 10°C. It is a reliable choice for both temperate and tropical dives.
Wenjie Zhang –
After six months of frequent dives, I’m happy to report the regulator is still performing smoothly. Some minor scratches on the brass, but no corrosion or functional problems.
[email protected] –
Thank you for your feedback, Wenjie. We appreciate your update and are pleased to hear the regulator continues to perform well; superficial scratches are normal but please reach out if you notice any performance issues.