Hydrostar Onion Tanks

Self Rising Water Storage Tank

Onion Water Storage TanksThe Onion Tank is a flexible product designed for emergency, fast response conditions. Made from the same durable materials as the standard storage pillow tanks, these flexible open-top tanks are a great choice for fire fighting, decontamination, and other emergency response situations.


Questions? We can help! Call our team at +1-772-646-0597 or fill out our quote request form to discuss your requirements.

Fabric Types

Medium Grade Fabric
Commercial Grade Fabric
Industrial Grade Fabric
  • Typically uses a 22 oz. PVC Material
  • Temporary Liquid Transportation
  • Economical
  • Higher Flexibility for Emergency Response
  • Recommended Contact Time:
    Up to 1 year
  • Typically uses a 30 oz. Elvaloy Material
  • Longer Term Use
  • Standard Area Conditions
  • Fabric Thickness for Rougher Terrains or Fast Transport
  • Recommended Contact Time:
    3 to 5 years
  • Typically uses a 40 oz. PVC Material
  • Demanding Transportation or Emergency Situations
  • Thickest, Most Rigid Fabrics
  • Rugged for Rough Terrains
  • Recommended Contact Time:
    Up to 7 years

Onion Tank Product Flyer (PDF)
Onion Tank Installation Instructions (PDF)

Onion tanks feature a self-supporting design that makes them an excellent choice for emergency response situations. Their open top and large storage ability has allowed them to be implemented as a fast response liquid storage unit. These collapsible tanks can be made with capacities up to 10,000 gallons (37,850 liters) for larger projects or liquid storage requirements.

Questions? We can help! Call our team at +1-772-646-0597 or fill out our quote request form to discuss your requirements.

Low Side Onion Water Tank Specifications

Capacity (Gal) Capacity (Ltr) Base Diameter Filled Height
250 Gallons 946 L 5'10" (1.8 m) 28" (0.7 m)
500 Gallons 1,893 L 7' (2.1 m) 32" (0.8 m)
750 Gallons 2,839 L 8'4" (2.5 m) 33" (0.8 m)
1,000 Gallons 3,785 L 9'5" (2.9 m) 33" (0.8 m)
1,500 Gallons 5,678 L 11'9" (3.6 m) 32" (0.8 m)
2,000 Gallons 7,570 L 13' (3.9 m) 32" (0.8 m)
2,500 Gallons 9,463 L 14'3" (4.4 m) 32" (0.8 m)
3,000 Gallons 11,355 L 15'3" (4.8 m) 34" (0.9 m)
5,000 Gallons 18,927 L 18'2" (5.5 m) 33" (0.8 m)
6,000 Gallons 22,712 L 21'6" (6.6 m) 33" (0.8 m)
10,000 Gallons 37,854 L 26'9" (8.2 m) 33" (0.8 m)

High Side Onion Water Tank Specifications

Capacity (Gal) Capacity (Ltr) Base Diameter Filled Height
500 Gallons 1,893 L 5' (1.5 m) 36" (0.9 m)
1,000 Gallons 3,785 L 8' (2.4 m) 44" (1.1 m)
1,600 Gallons 6,056 L 9' (2.7 m) 44" (1.1 m)
1,800 Gallons 6,813 L 9' (2.7 m) 46"(1.2 m)
2,000 Gallons 7,570 L 11'9" (3.6 m) 48"(1.2 m)
2,500 Gallons 9,463 L 12'8" (3.9 m) 48" (1.2 m)
3,000 Gallons 11,355 L 14'2" (4.3 m) 48" (1.2 m)
5,000 Gallons 18,927 L 16'2" (4.9 m) 60" (1.5 m)
6,000 Gallons 22,712 L 16'2" (4.9 m) 65" (1.7 m)
8,000 Gallons 30,283 L 19'5" (5.9 m) 65" (1.7 m)
10,000 Gallons 37,854 L 19' (5.8 m) 80" (2 m)

*Custom Sizes for Onion Tanks are Available Upon Request

See How The Flexible Onion Tanks have been Used

rising onion tankFire Fighting Water Supply: The collapsible onion storage tank is ideal for emergency response situations. Their open tops make them easy to fill with water that can later be used on help quickly put out fires. While the tank remains flexible for easy setup, it still has strong walls for handling rough terrains or fast transportation.

onion water tankWater Collection: As an open top tank, these dependable onion tanks are the perfect way to collect or temporarily store water. The versatility of the storage tank allows it to be used to supply sprinkler systems or other water management areas. It is also great in emergency relief efforts as it makes large quantities of potable water easily accessible to residents.

onion water tankDecontamination: Built with the same dependable materials that are used on the pillow tanks, these onion tanks are well equipped to handle some of the more hazardous materials such as contaminated water and equipment after spills. With reliable walls, these tanks are frequently used to decontaminate oil laden products or clean off animals.

Questions? We can help! Call our team at +1-772-646-0597 or fill out our quote request form to discuss your requirements.