Cardox® CO₂ Cylinder Filling Unit (CFU)

The Cardox® CO₂ Cylinder Filling Unit uses a heavy-duty liquid CO₂ transfer pump to move liquid carbon dioxide from a bulk storage tank into high-pressure cylinders.

Adjustable pressure regulation, integrated safety controls, and continuous filling capability help ensure consistent fills while allowing operators to quickly fill individual cylinders or alternate between two charging stations for increased throughput.

CTR's CO₂ Cylinder Filling Unit (CFU) is engineered to maximize productivity, improve operator efficiency, and provide safe, reliable cylinder filling for industrial gas operations.  Key features and benefits include: 

• Efficient Liquid CO₂ Transfer – Transfers liquid CO₂ directly from low-pressure bulk storage tanks into high-pressure cylinders for fast, reliable filling.
• Adjustable Filling Pressure – Filling pressure is adjustable from approximately 600 to 1,000 PSI to optimize filling performance for varying cylinder temperatures and operating conditions.
• Continuous Filling Operation – An integrated pressure regulator automatically returns excess liquid CO₂ to storage—eliminating pump shutdowns between fills and reducing downtime.
• Higher Throughput – Dual charging lines allow one cylinder to be filled while another is changed out, increasing productivity and minimizing operator downtime.
• Integrated Safety Protection – Relief valves, a safety disc, pressure gauge, bleed-off valves, and motor overload protection help safeguard operators and equipment.
• Proven Filling Performance – Typical transfer capacity of approximately 35 pounds of CO₂ per minute for reliable cylinder filling performance.

Every Cardox® CO₂ Cylinder Filling Unit is custom engineered to meet each customer's operating requirements and integrate seamlessly with new or existing bulk liquid CO₂ storage systems. Designed for safe, reliable filling of high-pressure CO₂ cylinders, these systems are ideal for:

• Industrial gas cylinder filling operations
• Carbon dioxide production and distribution facilities
• Gas distributors and cylinder filling plants
• Beverage-grade CO₂ cylinder filling
• Specialty gas and packaged gas operations
• New installations, system expansions, and replacement of existing Cardox® cylinder filling equipment

Replacement parts and system components are available to support the continued operation, maintenance, and refurbishment of Cardox® CFU systems. Common components include:

• Transfer pumps
• Charging hoses
• Pressure regulating valves
• Suction/discharge valves
• Safety disc assemblies
• Relief valves
• Rebuild components
• Complete rebuild procedures
• Recommended spare-parts inventory
• Spare parts

CTR also provides service and refurbishment support for Cardox® CFU systems, including rebuild assistance, component replacement, and maintenance support to help extend equipment life and maintain reliable operation.