PD Car


Cubic Capacity: 3,230 - 5,660 cu. ft.

Gross Rail Loads: 263,000 - 286,000 lbs.

Hatch Styles: Round

Unloading Mechanism: Pressure Differential System


  • Flour
  • Corn Starch
  • Mineral Powder
  • Lime
  • Clay
  • Cement

Pressure Differential Cars, more commonly known as "PD Cars", are primarily used to ship dry, free-flowing commodities using up to 14.7 PSI.  Commodities most commonly shipped in PD Cars include; flour, corn starch, mineral powder, lime, clay and cement.  Cars shipping food-grade commodities such as flour are equipped with food-grade linings.