Onion Self-Supporting Tanks
OPEN TOP RESERVOIRS
The Canflex Onion Self-Supporting Tanks are frameless, self-rising open-top reservoirs designed for oil spill response, environmental operations, and fluid containment. Their onion-shaped design allows for rapid deployment, easy setup, and efficient fluid storage without the need for additional framing.
Reliable & Versatile Containment
✔ Self-Rising Design – Floating collar automatically expands as the tank fills, eliminating complex setup.
✔ Durable Construction – Built with flexible, oil-resistant materials for long-term, high-performance use.
✔ Government-Approved Coatings – Available with various protective coatings to meet industry and environmental regulations.
Quick & Lightweight for Fast Response
✔ No Frame Required – Lightweight and easily transportable for emergency response situations.
✔ Flexible Capacity – Available in multiple sizes to suit various spill recovery and storage needs.
✔ Complete Accessory Options – Includes tie-downs, anchor points, ground sheets, and storage bags, with optional inner liners, top covers, and outlet fittings up to 6”.
Onion Tanks are a trusted solution for rapid fluid storage, spill containment, and environmental response, offering turnkey readiness with minimal setup and maximum durability.
Capacities range from 2 to 94.6 m³ (500 to 25,000 gallons).
Some of the Onion Open Top Tanks features are:
- Air Inflatable Heavy Duty Oil Containment Boom
- Excellent wave conformance and oil retention characteristics
- Independent, segmented buoyancy chaambers
- Monsun check valves for rapid inflation and deflation
- Corrosion resistant ASTM style marine grade aluminum connectors
- Heavy duty galvanized steel ballast chain
- Low maintenance and easily cleaned
- Marine grade shipping / storage plywood box (Optional)
Applications include, but not limited to:
- Spill Response
- Hazmat Operations
- Military Operations
- Potable (drinking) Water Tank
- Disaster Relief
- Fuel Storage
- Firefighting
- Forestry Service
- Wastewater
- Portable Storage
- Remote Storage
- Gray Water Storage
- Portable Water Tank
- Chemical Storage
- Remediation Projects
Canflex Open Top Tank - Self Floating Foam Collar "CF" and Air Filled Collar "CA"
| Model CA = Air Collar CF = Foam Collar |
Capacity | Base Diameter | Collar Diameter | Height | Shipping Volume* | Dry Weight (no accessories) |
Fill / Offload Connections |
|---|---|---|---|---|---|---|---|
| CA-2CM / CF-2CM | 2.0 m³ / 2,000 bbl 500 USG |
2.3 m / 7.6 ft | 1.4 m / 4.7 ft | 0.97 m / 3.2 ft | 0.6–0.9 m³ / 21–32 ft³ | 82 kg / 180 lb | 1 × 2” NPT |
| CA-4CM / CF-4CM | 4.0 m³ / 4,000 bbl 1,000 USG |
3.0 m / 10 ft | 1.8 m / 5.8 ft | 0.97 m / 3.2 ft | 0.6–0.9 m³ / 21–32 ft³ | 86 kg / 190 lb | 1 × 2” NPT |
| CA-6CM / CF-6CM | 6.0 m³ / 6,000 bbl 1,500 USG |
3.7 m / 12.0 ft | 2.4 m / 8.0 ft | 0.97 m / 3.2 ft | 0.7–1.1 m³ / 24.5–39 ft³ | 96 kg / 210 lb | 1 × 2” NPT |
| CA-8CM / CF-8CM | 8.0 m³ / 8,000 bbl 2,100 USG |
3.8 m / 12.5 ft | 2.7 m / 9.0 ft | 0.97 m / 3.2 ft | 0.7–1.1 m³ / 24.5–39 ft³ | 127 kg / 280 lb | 1 × 2” NPT |
| CA-10CM / CF-10CM | 10.0 m³ / 10,000 bbl 2,650 USG |
4.7 m / 15.4 ft | 3.2 m / 10.6 ft | 0.97 m / 3.2 ft | 0.8–1.3 m³ / 28–50 ft³ | 195 kg / 430 lb | 1 × 3” NPT (2” for E model) |
| CA-12CM / CF-12CM | 12.5 m³ / 12,500 bbl 3,300 USG |
5.0 m / 16.4 ft | 3.5 m / 11.5 ft | 1.18 m / 3.9 ft | 0.8–1.3 m³ / 28–50 ft³ | 195 kg / 430 lb | 1 × 3” NPT (2” for E model) |
| CA-15CM / CF-15CM | 15.0 m³ / 15,000 bbl 4,000 USG |
5.5 m / 18.0 ft | 3.81 m / 12.5 ft | 1.21 m / 4.0 ft | 0.9–1.5 m³ / 32–53 ft³ | 218 kg / 480 lb | 1 × 3” NPT (2” for E model) |
| CA-20CM | 20.0 m³ / 20,000 bbl 5,300 USG |
5.8 m / 19.0 ft | 4.3 m / 14.3 ft | 1.21 m / 4.0 ft | 1.56 m³ / 55 ft³ | 255 kg / 560 lb | 1 × 3” NPT (2” for E model) |
| CA-25CM | 25.0 m³ / 25,000 bbl 6,600 USG |
6.0 m / 20.0 ft | 4.3 m / 14.3 ft | 1.21 m / 4.0 ft | 2.0 m³ / 71 ft³ | 290 kg / 640 lb | 1 × 3” NPT |
| CA-30CM | 30.0 m³ / 30,000 bbl 8,000 USG |
7.0 m / 23.0 ft | 4.3 m / 14.3 ft | 1.21 m / 4.0 ft | 2.1 m³ / 74 ft³ | 313 kg / 690 lb | 2 × 3” NPT |
| CA-38CM | 38.0 m³ / 38,000 bbl 10,000 USG |
7.0 m / 23.0 ft | 4.3 m / 14.3 ft | 1.52 m / 5.0 ft | 2.4 m³ / 85 ft³ | 400 kg / 880 lb | 2 × 3” NPT |
| CA-50CM | 50.0 m³ / 50,000 bbl 13,200 USG |
7.62 m / 25.0 ft | 5.8 m / 19.0 ft | 1.52 m / 5.0 ft | 3.0 m³ / 106 ft³ | 430 kg / 950 lb | 2 × 3” NPT |
| CA-60CM | 60.0 m³ / 60,000 bbl 15,800 USG |
8.0 m / 26.3 ft | 5.8 m / 19.0 ft | 1.52 m / 5.0 ft | 3.1 m³ / 110 ft³ | 485 kg / 1,070 lb | 2 × 3” NPT |
| CA-75CM | 75.0 m³ / 75,000 bbl 20,000 USG |
9.4 m / 31.0 ft | 7.11 m / 23.3 ft | 1.52 m / 5.0 ft | 4.8 m³ / 170 ft³ | 567 kg / 1,250 lb | 3 × 3” NPT |
| CA-100CM | 100 m³ / 100,000 bbl 26,400 USG |
11.3 m / 37.0 ft | 7.11 m / 23.3 ft | 1.52 m / 5.0 ft | 5.5 m³ / 195 ft³ | 658 kg / 1,450 lb | 3 × 3” NPT |