Cylinders and Gas Banks

Diving Gas Cylinders and Gas Banks for Commercial and Offshore Operations

Safe and reliable gas storage is essential for every commercial diving operation.
Unique Group supplies a wide range of diving gas cylinders and gas banks engineered to meet the highest international safety and performance standards.
Our cylinders and gas storage systems are designed for saturation diving, decompression chambers, and life-support environments, ensuring a continuous and controlled supply of breathing gases offshore.

Our Range of Diving Gas Cylinders and Gas Banks

Our range covers both individual diving cylinders and high-capacity gas storage banks, designed for use in offshore, onshore, and vessel-based diving systems.

• High-Pressure Diving Cylinders – Steel or aluminium cylinders available in multiple capacities for storage of air, oxygen, nitrox, or helium.

• Diving Gas Banks – Modular manifolds and cascade systems for large-scale offshore operations and saturation diving spreads.

• Oxygen and Nitrox Cylinders – Suitable for mixed-gas diving operations requiring precise gas blends.

• Storage Racks and Frames – Custom-designed racks for safe transport and handling on diving support vessels (DSVs).

• Certified Gas Cylinders – Supplied with valid test certificates and compliant with IMCA and ISO 9809 standards.

Key Features and Advantages

• Safety Assured: Designed and manufactured in compliance with international pressure vessel and diving gas standards.

• Multiple Configurations: Available in single-cylinder and manifolded gas bank setups.

• Material Options: Constructed from high-grade steel or aluminium for durability and corrosion resistance.

• Certified and Traceable: Each cylinder supplied with inspection certificates and hydrostatic test documentation.

• Easy Integration: Compatible with diving control panels, compressor systems, and life-support gas distribution units.

• Operational Efficiency: Optimised design for rapid filling, controlled discharge, and easy handling.

Applications

Unique Group’s diving gas cylinders and gas banks are used across a wide range of offshore and subsea operations, including:

• Saturation Diving Systems: Storage and supply of breathing gases for life-support chambers.

• Decompression Chambers: Maintaining precise gas mixtures during diver decompression cycles.

• Offshore Construction and Maintenance: Reliable gas storage for continuous underwater operations.

• Diving Support Vessels (DSVs): Integrated gas storage and distribution systems for onboard diving spreads.

• Onshore Testing Facilities: Safe storage and transfer of gases for system testing and calibration.

Maintenance and Inspection

To ensure safety and compliance, regular inspection and testing of diving cylinders and gas banks are essential.
Unique Group provides hydrostatic testing, visual inspection, and recertification services for all types of diving cylinders and gas storage systems.
Our qualified technicians ensure every unit meets the latest industry standards for pressure integrity and gas purity.

Why Choose Unique Group

With decades of expertise in diving and life-support systems, Unique Group is a trusted global supplier of certified diving gas cylinders and gas banks.
Our products are built for safety, longevity, and offshore performance — supported by a worldwide service network and technical expertise.

Discover our full selection of diving gas cylinders and gas banks below or contact our team for expert guidance on the ideal configuration for your diving operation.

Frequently Asked Questions

What are the gas cylinders used by divers?

Divers use gas cylinders, commonly referred to as diving cylinders or scuba tanks, to store and transport high-pressure breathing gases such as air, nitrox, trimix, or heliox. These cylinders are typically made from steel or aluminum and are rigorously tested to withstand the pressures required for underwater diving. The choice of gas mixture depends on the dive’s depth, duration, and the specific breathing requirements of the diver.

What type of gas is used for diving?

Diving gas cylinders typically contain compressed air or a mixture of gases such as nitrox (enriched air), trimix (a blend of oxygen, nitrogen, and helium), or heliox (a mix of helium and oxygen), depending on the depth and type of dive. These gas mixtures are chosen to reduce the risks associated with deep diving, such as nitrogen narcosis and oxygen toxicity. For very deep dives, other specialized gas mixtures like hydrox may also be used.