Onion Self-Supporting Tanks
The “Open Top Tanks” are frameless, self-rising, circular, “onion” shaped, reservoirs / bladders used for oil spill response, environmental operations, and spill recovery.
A wide range of special government approved material coatings are available for the tanks. These tanks are made of flexible and oil resistant material. Their design, fabric, and manufacturing process make them hard wearing and suitable for intensive use.
The open top tanks have a self-rising / floating collar made of either closed cell foam, or are air filled. These are light-weight, reliable, fast response units requiring no frame set-up.
No frame is required as the floating collar rises automatically. Tie downs, anchor points, hand holds, ground sheet, carry/storage bag, and filling connections are all included. Available accessories include: replaceable inner liner, top cover, repair kit, and outlets up to 6” are optional.
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
Capacities range from 2 to 94.6 m³ (500 to 25,000 gallons).
| Model CA = AIR COLLAR CF = FOAM COLLAR | Capacity | Full Dimension | *Shipping Volume | Dry Weight without accessories | Fill / Offload Connections | ||
| Base Diameter (Ø) | Collar Diameter (Ø) | Height | |||||
| m³ / Barrels | m | m | m | m³ | kg | ||
| USG | ft | ft | ft | ft³ | lbs | ||
| CA-2CM CF-2CM | 2.0 / 2,000 | 2.3 | 1.4 | 0.97 | 0.6/ 0.9 | 82 | 1 x 2” NPT |
| 500 | 7.6 | 4.7 | 3.2 | 21 / 32 | 180 | ||
| CA-4CM CF-4CM | 4.0 / 4,000 | 3.0 | 1.8 | 0.97 | 0.6/ 0.9 | 86 | 1 x2” NPT |
| 1,000 | 10 | 5.8 | 3.2 | 21 / 32 | 190 | ||
| CA-6CM CF-6CM | 6.0 / 6,000 | 3.7 | 2.4 | 0.97 | 0.7 / 1.1 | 96 | 1 x2” NPT |
| 1,500 | 12.0 | 8.0 | 3.2 | 24.5 / 39 | 210 | ||
| CA-8CM CF-8CM | 8.0 / 8,000 | 3.8 | 2.7 | 0.97 | 0.7 / 11 | 127 | 1 x2” NPT |
| 2,100 | 12.5 | 9.0 | 3.2 | 24.5 / 39 | 280 | ||
| CA-10CM CF-10CM | 10.0 / 10,000 | 4.7 | 3.2 | 0.97 | 0.8 / 1.3 | 195 | 1 x 3” NPT (2” for E model) |
| 2,650 | 15.4 | 10.6 | 3.2 | 28 / 50 | 430 | ||
| CA-12CM CF-12CM | 12.5 / 12,500 | 5.0 | 3.5 | 1.18 | 0.8 / 1.3 | 195 | 1 x 3” NPT (2” for E model) |
| 3300 | 16.4 | 11.5 | 3.9 | 28 / 50 | 430 | ||
| CA-15CM CF-15CM | 15.0 / 15,000 | 5.5 | 3.81 | 1.21 | 0.9 / 1.5 | 218 | 1 x 3” NPT (2” for E model) |
| 4,000 | 18.0 | 12.5 | 4.0 | 32 / 53 | 480 | ||
| CA-20CM | 20.0 / 20,000 | 5.8 | 4.3 | 1.21 | 1.56 | 255 | 1 x 3” NPT (2” for E model) |
| 5,300 | 19 | 14.3 | 4.0 | 55.0 | 560 | ||
| CA-25CM | 25.0 / 25,000 | 6.0 | 4.3 | 1.21 | 2.0 | 290 | 1 x 3” NPT |
| 6,600 | 20.0 | 14.3 | 4.0 | 71 | 640 | ||
| CA-30CM | 30.0 / 30,000 | 7.0 | 4.3 | 1.21 | 2.1 | 313 | 2 x 3” NPT |
| 8,000 | 23.0 | 14.3 | 4.0 | 74 | 690 | ||
| CA-38CM | 38.0 / 38,000 | 7.0 | 4.3 | 1.52 | 2.4 | 400 | 2 x 3” NPT |
| 10,000 | 23.0 | 14.3 | 5.0 | 85 | 880 | ||
| CA-50CM | 50.0 / 50,000 | 7.62 | 5.8 | 1.52 | 3.0 | 430 | 2 x 3” NPT |
| 13,200 | 25.0 | 19.0 | 5.0 | 106 | 950 | ||
| CA-60CM | 60.0 / 60,000 | 8.0 | 5.8 | 1.52 | 3.1 | 485 | 2 x 3” NPT |
| 15,800 | 26.3 | 19 | 5.0 | 110 | 1,070 | ||
| CA-75CM | 75.0 / 75,000 | 9.4 | 7.11 | 1.52 | 4.8 | 567 | 3 x 3″ NPT |
| 20,000 | 31 | 23.3 | 5.0 | 170 | 1,250 | ||
| CA-100CM | 100 / 100,000 | 11.3 | 7.11 | 1.52 | 5.5 | 658 | 3 x 3″ NPT |
| 26,400 | 37.0 | 23.3 | 5.0 | 195 | 1,450 | ||
