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 these 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 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.

Open Top Firefighting
Open Top Firefighting
Open Top- Air collar TEST
Open Top- Air collar TEST
Open Top- Air collar TES
Open Top Firefighting
Onion Self Supporting Tanks
Open Top- Spill Response
Open top- Potable Water Tank
Open Top- Spill Response
Open Top wit foam collar
Open Top with fill- offload valve
Low profile Open Top -remediation
Low profile Open Top -Remediation
Filling Open Top w Quick Dump
Filling Open Top w Quick Dump
Filling Open Top w Quick Dump

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 chambers
  • 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)
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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).

Technical Information

Canflex Open Top Tank – Self Floating Foam Collar “CF” and Air Filled Collar “CA”

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 5.0 2.4 400 2 x 3” NPT
10,000 23.0 14.3 1.52 85 880
CA-50CM 50.0 / 50,000 7.62 5.8 5.0 3.0 430 2 x 3” NPT
13,200 25.0 19.0 1.52 106 950
CA-60CM 60.0 / 60,000 8.0 5.8 5.0 3.1 485 2 x 3” NPT
15,800 26.3 19 1.52 110 1,070
CA-75CM 75.0 / 75,000 9.4 7.11 5.0 4.8 567 3 x 3″ NPT
20,000 31 23.3 1.52 170 1,250
CA-100CM 100 / 100,000 11.3 7.11 5.0 5.5 658 3 x 3″ NPT
26,400 37.0 23.3 1.52 195 1,450

 

*ADD 10% more shipping volume for “CF” models with self floating foam collar

Videos
Anacortes Fire Department filling 3000 USG Open Top Collar
Canflex Open Top Tanks – sizes ranging from 500 thru 25,000 USG
Anacortes Fire Department filling 3000 USG Open Top