Tank car
A tank car or tank wagon is a type of railroad car designed to transport liquids or gases.
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Tank Car Media
Inside the valve housing on top of a tank car in the United States, with a magnetic level gauge pulled out
A historical milk tank car for bulk loading at the Illinois Railway Museum.
Type of shipping containers mounted on a spine car: Tank container (left), and an open-top shipping container with canvas cover (right)
Wooden vinegar car, at the Toronto Railway Museum in Roundhouse Park.