Trans-Flow Corporation pneumatic unloaders in 30 hp, 40 hp or 60 hp capacities unload any bulk dry granular material such as fly ash, fertilizer, lime, kaolin clay, powders, pelletized plastics and dry cement. They deliver a steady stream of low pressure air at 12 or 15 psi into the tanker through one pipeline and out through another. They can unload a bulk tanker up to 15 minutes faster than a turbo conveyor. The motor is totally enclosed, fan-cooled. Standard equipment includes an air intake filter, pressure safety valve and check valve. Outlet openings can be 3″ or 4″. This system can add to your profits by saving time, reducing energy costs, and reducing maintenance downtime and expense.


Pneumatic Unloader

  • 30, 40 or 60 hp, 230/460 volt, 60 Hz, 3 phase T.E.F.C. motor
  • Dry replaceable intake filter Mounted on steel reinforced base
  • Pressure relief valve for overload protection
  • Check valve
  • Cam lock hose connector with dust cap
Motor Size
Air Flow
Air Pressure
30 350 12
40 350 15
60 550 15

How to determine capacity requirements

Material density and pipeline length and design influence the choice of components. The table below will give you an idea of the density of typical materials handled. Please contact us and we will help you choose the correct size and capacity of system components for your application.

Typical Densities
(Pounds per cubic foot)
ABS pellets 34.7
Cement 96.0
Clay kaolin 74.1
Fertilizer #2 75.8
Fly ash 46.2
Nylon Pellets 47.3
Polystyrene 40.6

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