Hagen Engineering International
P.O. Box 21364 . St. Paul, MN 55121-0364
651-686-5686 . info@hagenengineering.com
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Technologies

HEI has the capabilities to be your technology provider for the following environmental technologies with proven experience and successful projects around the world.

Floating Roofs

Internal

• Pan
• Compartmentalized Pan
• Pontoon

External

• Annular Pontoon
• Double Deck

Gas Holders

Wiggins (Dry Seal)

Water Seal

Thermal Energy Storage Tanks

Chilled Water

Hot Water

Vapor Bag Holders