Dairy, Easy Clean Rotary Airlock DDT Series
The Dairy, Easy Clean Rotary Airlock DDT Series meters product out of a hopper while isolating the air pressures on either inlet or outlet of the airlock.  A typical application for an airlock is to meter product into a convey line.


  • Cast 316 Stainless steel housing and end plates
  • 8-Vane open ended, 316 stainless steel, rotor consisting of >1/4” and <5/16” plate vanes continuously welded to cold rolled shaft
  • Radiused rotor pockets
  • Relieved (beveled) rotor tips and sides
  • 150 Grit polished interior surfaces
  • USDA Certificate of approval for use in dairy plants
  • Supporting bars for easy removal of rotor and end cover
  • Sheared angle inlet
  • Maximum pressure differential of 22 PSIG
  • Class I clearances (0.004” to 0.005”) between the rotor and the housing/end plates
  • Outboard ball bearings, factory lifetime lubricated, with felt seals and concentric locking collar – 176° F maximum operating temperature
  • External, PTFE packing gland type seals

  • Increased rotor clearances as required based on application (e.g., product, temperature, materials of construction, etc.)
  • High temperature design (<400° F)
  • Shaft seal air purge assembly
  • Housing vent ports
  • TEFC, X-Proof, Mill & Chem, High Efficiency, Premium Efficiency, Inverter Duty drive groups
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Dairy, Easy Clean Rotary Airlock DDT Series

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