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Double Wall Tanks:  Flammable Liquid Storage

Onsite containment management of waste oil, generator fuel, transmission fluids, motor oil and other hazardous liquids is a major market focus for B H Tank, Inc. Our VDW Double Wall Tanks are U.L. 142 approved and designed according to Aboveground Secondary Containment of Flammable Liquids specifications. These requirements cover steel atmospheric tanks intended for aboveground storage of non-corrosive, stable flammable and combustible liquids that have a specific gravity not exceeding that of water.
 
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The VDW double wall tanks are intended for installation and use in accordance with the Flammable and Combustible Liquids Code, NFPA 30; the Standard for Installation of Oil Burning Equipment, NFPA 31; and the Automotive and Marine Service Station Code, NFPA 30A. Double Wall Tanks covered by these requirements are fabricated, inspected and tested for leakage before shipment from the factory as completely assembled vessels.

Secondary Containment Aboveground Tank for Flammable Liquids - A primary containment aboveground tank contained within a steel secondary containment shell forming an interstitial (annular) space, which is capable of being, monitored for leakage into the space from either the interior or exterior walls.

The Secondary Tank will contain 110 percent of the primary tank nominal capacity.

The tanks are manufactured for vented storage of waste oil, solvents, antifreeze, diesel, and other products that required double wall containment.

The double wall tanks are finished with a "Safety Red" baked on topcoat for outdoor exposure and are forklift accessible for transporting when empty. Tanks are for stationary use only. Other tank features include:

  • A gauge rod for monitoring the secondary containment tank.
  • A 4" threaded fill port with hinged inspection hatch.
  • (2) 4" threaded vent ports for emergency pressure relief vents on secondary and primary compartments
  • (2) 2" FNPT (female national pipe thread) fittings in primary compartment for normal vent and pump outlet
  • (1) 2" FNPT in secondary containment compartment for drain plug
  • Forklift channels to move tank (empty only) and elevate tank 1-1/2" above ground
  • Baked on polymer powder coating. Standard colors are Red, White or Blue. Custom colors available.

Visit our "How to Buy" section to request more information about our double wall tanks.


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