Darco's patented polyethylene OcTanks are a modular system comprised of individual 2000 gallon vessels connected end to end. The nickname "OcTank" refers to the 8 sided internal rib design that gives this vessel strength and rigidity when buried. This modular system is commonly used when storing from 4,000 up to 12,000 gallons or more under certain circumstances.

4000 Gallon OcTank Configuration
(shown with optional manway extension)

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4000 Gallon OcTank Configuration
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| Uses | potable, fire, gray, etc. | Price | See Accessory Pages Below |
| Capacity | 4000 gallons (nominal) | Dry Weight | 1600 lbs |
| Length | 15'- 0" (nominal) | Diameter | 90" (nominal) |
Manway Extensions, Blank Cover, & Interconnect Details
8000 Gallon OcTank Configuration
(shown with optional manway extension)

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8000 Gallon OcTank Configuration
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| Uses | potable, fire, gray, etc. | Price | See Accessory Pages Below |
| Capacity | 8000 gallons (nominal) | Dry Weight | 3200 lbs |
| Length | 30'- 0 " (nominal) | Diameter | 90" (nominal) |
12,000 Gallon OcTank Configuration
(shown with optional manway extension)

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12,000 Gallon OcTank Configuration
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| Uses | potable, fire, gray, etc. | Price | See Accessory Pages Below |
| Capacity | 12,000 gallons (nominal) | Dry Weight | 4800 lbs |
| Length | 23'- 6" ( 2 parallel rows) | Diameter | 90" (nominal) |
Underground Water Tank Configurations Incorporating 8" Manifolds

Many other configurations are possible.
Please call or email for more details

