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Tank Calibration Charts Page Updated on 8/14/2019

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When performing an underground storage tank (UST) overfill prevention equipment inspection, it is very important to use the correct tank calibration chart to determine whether or not the equipment is activating at the correct level.

Some tank manufacturers have calibration charts available on their websites:

If you cannot find an original chart, Modern Welding has a tank chart generator for steel tanks available here.

Since original tank charts can be difficult to find, Unidocs has provided the following charts as a service to UST owners / operators and UST Service Technicians. In providing this information, Unidocs is not endorsing the use of any particular manufacturer's equipment. What is provided is what we have. If you cannot find a particular chart now, please check back since we plan to update this collection as additional charts become available.


Single / Double
Wall
Tank Capacity
(gallons)
Chart
Ace Tank and Equipment Co. DW 10,000 8

Fluid Containment, Inc. DW 2,500 6

Joor Manufacturing DW 10,000 10

Joor Manufacturing DW 12,000 10

Joor Manufacturing DW 15,000 10

Modern Welding Co. DW 5,000 10

Modern Welding Co. DW 6,000 8

Modern Welding Co. DW 8,000 8

Modern Welding Co. DW 10,000 8

Modern Welding Co. DW 12,000 8

Modern Welding Co. DW 20,000 10

Owens-Corning (O/C Tanks Corp.) DW 4,000 6

Owens-Corning (O/C Tanks Corp.) DW 10,000 8

Owens-Corning (O/C Tanks Corp.) DW 12,000 8

Owens-Corning (O/C Tanks Corp.) SW 4,000 8

Owens-Corning (O/C Tanks Corp.) SW 6,000 8

Owens-Corning (O/C Tanks Corp.) SW 8,000 8

Owens-Corning (O/C Tanks Corp.) SW 10,000 8

Owens-Corning (O/C Tanks Corp.) SW 12,000 8

Perkins Welding Works DW 10,000 8

Plasteel, Inc. DW 2,000 6

Plasteel, Inc. DW 10,000 10

Plasteel, Inc. DW 15,000 10

Trusco Tank, Inc. DW 8,000 8

Trusco Tank, Inc. DW 12,000 8

Trusco Tank, Inc. DW 15,000 10

Trusco Tank, Inc. DW 6,000 Compartmented 10

Trusco Tank, Inc. DW 8,000 Compartmented 10

Trusco Tank, Inc. DW 15,000 Compartmented 10