Twin Screw Vent Port StufferSingle Screw Vent Port Stuffer Drawing

Vent Port Stuffers provide a safe way to increase production whilst removing air, moisture and volatiles without losing process material from the vent port.

Vent Port Stuffers reduce the need to review screw profiles and still work when the barrel liners start to wear, whilst also preventing material exiting through the vent port, which can be a costly problem leading to blocked vents, dropped strands and degrading 'black specs' on the end product. 


  • Reliable, trouble-free self-cleaning twin-screw design helps prevent material rising up the vent port when de-gassing
  • Self-cleaning, replaceable screws for process reliability
  • Allows full vacuum to be drawn when removing air, moisture and volatiles
  • Angled vacuum take-off prevents condensate returning to the extruder process melt
  • Can be installed on most production sized twin screw compounding extruders


  • Run extruders at higher outputs or fill levels and maintain product quality
  • Minimise inconvenient and costly down time through vent port blockage
  • Remove need for an operator to continuously monitor the extruder
  • No need to clean the vent when running, means improved operator safety
  • Constructed from high quality material to a robust no nonsense design 


  • Self-wiping co-rotating twin screws with 100rpm screw speed
  • AC geared motor unit connected to a water cooled, oil filled splitter gearbox for longer life
  • Threaded vacuum take-off connection
  • High temperature vacuum seals
  • Easy clean, two part vacuum chamber
  • Supplied with electrical control box, including plug and socket connections 
  • Supplied with a through hardened barrel vent port adaptor