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Flexible Onion Tanks

Superior flexible containment systems

Berg offers a variety of solutions to meet your water and fuel storage needs.


Our line of Onion tanks are engineered for all water storage applications.  They are easy to deploy and use in diverse settings and can be deployed on a slope up to 10%.

Contact a Berg representative today to learn more about flexible tank systems or to place an order:


Zipper Top Onion Tank

Water tight zipper ensures an environmental seal for potable water storage

Open Top Onion Tank

Open top is designed for non-potable water storage needs

Roll Top Onion Tank

Roll top design allows easy access for chemical insertion

Pillow Tank

Flexible fabric tanks for fuel and water storage.