Ottevanger offers a range of expanders which improve the quality of finished feed as well as more efficient production process flow. The Ottevanger Contivar expanders have a reliable and sturdy design and are equipped with a unique Active Disk system (AD-system) in order to control exact product output and assure the quality of the product. The AD-system is easy to control and it is easy to exchange wear parts. The robust and simple design of the Ottevanger Contivar guarantees years of trouble free and economical production.


  • Eliminate heat sensitive bacteria (salmonella)
  • Addition of higher fats and liquids inclusions
  • Gelatinization of available starches
  • Improved end product durability and strength
  • Increased output of pellet mill
  • Reduces wear costs of pellet mill
  • Improved water stability for fish feed
  • Enhanced oil extraction
  • Easy cleaning
  • Less downtime for maintenance
  • Low cost of wear parts

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Range of Expanders

Type Motor(kW) Motor slide adjustment
(power kW)
barrel diameter
AL150 45-75 0,55 150 1-6
AL200 75-132 0,55 200 5-10
AL300 132-315 0,75 300 10-30
AL350 315-400 0,75 350 30-45