The Poseidon 3L Steel Cylinder 300 Bar is a scuba cylinder from Poseidon – the pressurised container that holds your breathing gas. Aluminium or steel construction, precision-machined and pressure-tested, it’s the backbone of every dive at Tioman’s diverse coral gardens.
Technical Specifications
| Specification | Details |
| Brand | Poseidon |
| Product | 3L Steel Cylinder 300 Bar |
| Material | Steel |
| Capacity | – |
| Working Pressure | 200 bar |
| Valve | DIN / Yoke |
| Best For | Recreational diving |
Key Features
- Precision machined: Walls are uniform and strong – holds pressure consistently.
- Pressure tested: Every cylinder is tested before it leaves the factory.
- Standard valve fitting: DIN or yoke – fits any regulator system.
- Durable finish: Anodised coating resists corrosion and scratches.
Suited for Malaysian Dive Sites
The Poseidon 3L Steel Cylinder 300 Bar is built to perform across Malaysia’s best underwater destinations. Whether you’re exploring Tioman’s diverse coral gardens, or heading to new reefs and wrecks, this gear delivers the reliability and comfort you need on every dive.
Care & Maintenance
- Rinse the outside after every dive.
- Inspect the valve and O-ring before each dive.
- Have it hydrostatically tested on the manufacturer’s schedule.
- Never fill above the rated working pressure.
Final Verdict
The pressurised heart of every dive. The Poseidon 3L Steel Cylinder 300 Bar is precision-built, pressure-tested, and built to last – the foundation everything else depends on.




Kai Wong –
Can the Poseidon 3L Steel Cylinder 300 Bar be used for industrial purposes?
Junhao Lo –
Thank you for your review of the Poseidon 3L Steel Cylinder 300 Bar, Kai. Yes, our steel cylinders are designed for heavy-duty industrial use and meet strict safety standards. They’re perfect for applications where high pressure and durability are required. The 300-bar capacity is suitable for various industrial purposes, including laboratory, medical, and commercial use. If you have any further questions or concerns, please don’t hesitate to reach out.
Aisyah Tan –
Is the Poseidon 3L Steel Cylinder 300 Bar suitable for diving deep into the ocean?
Imran Hanafiah –
Thank you for your review, Aisyah Tan. Congratulations on giving our Poseidon 3L Steel Cylinder 300 Bar a 5-star rating. The Poseidon 3L Steel Cylinder 300 Bar is designed for scuba diving and can reach depths suitable for recreational diving. However, we recommend consulting the dive tables and following safe diving practices to ensure a safe and enjoyable experience. Our cylinder is manufactured to meet high standards of quality and safety. If you have any further questions, please don’t hesitate to reach out. We appreciate your feedback.
Khairul Hafiz –
What kind of maintenance does the Poseidon 3L Steel Cylinder 300 Bar require?
Celine Lee –
Will the Poseidon 3L Steel Cylinder 300 Bar rust if exposed to water for an extended period?
Junhao Lo –
Thank you for reaching out about the Poseidon 3L Steel Cylinder 300 Bar. We’re glad you’re interested in learning more about its durability. Our Poseidon 3L Steel Cylinder 300 Bar is made from high-quality steel that’s resistant to rust and corrosion. While it’s true that any metal can rust if exposed to water for an extended period, our product is designed to withstand normal use in a variety of environments. In fact, many of our customers use our cylinders in marine environments without any issues. That being said, we do recommend following proper cleaning and maintenance procedures to ensure the longevity of your cylinder. For more information, please refer to our product manual or contact our customer support team for assistance.
Mia Ng –
Does the Poseidon 300 Bar work underwater?
Imran Hanafiah –
Thank you for reaching out to us, Mia. The Poseidon 3L Steel Cylinder is designed to be used with a scuba tank regulator to provide a safe and reliable air supply underwater. While the cylinder itself is not specifically designed to work underwater, the tank regulator is typically located above water and connected to the cylinder via a hose. However, please ensure that the regulator is properly secured and protected from water ingress to prevent any potential risks. If you have any further questions or concerns, feel free to ask.
Elvin Tan –
I’ve only had the Poseidon 3L Steel Cylinder 300 Bar for a week, but I can already tell it’s a game-changer for my diving adventures. The steel build is incredibly solid and the 300-bar capacity is everything I needed. Highly recommended!
Rahul Kaur –
How reliable is the Poseidon 3L Steel Cylinder 300 Bar under high pressure?
Ariel Chua –
I’ve had the Poseidon 3L Steel Cylinder 300 Bar for years now and it still holds up like new. The durability is amazing and the price was reasonable.
Davin Leong –
I love the Poseidon 3L Steel Cylinder 300 Bar, but the valve is a bit tricky to turn initially. Other than that, it’s been a fantastic investment.
Rahul Suresh –
The Poseidon 3L Steel Cylinder 300 Bar was a bit pricey, but its quality and performance made it worthwhile. However, I would have appreciated a bit more variety in the available color options.
Faye Lim –
I’m extremely satisfied with the Poseidon 3L Steel Cylinder 300 Bar. Its performance has been consistent and its quality is top-notch.
Zara Mohamed –
The Poseidon 3L Steel Cylinder 300 Bar exceeded my expectations with its durability and reliability. However, I wish the price was a bit more affordable.