Polymer Processing Systems

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PolyStream™ Motorized Back Pressure Valve

To prevent excessive pressure increases (caused by build-up of screen contamination), an integrated valve is designed to automatically open, as needed, to maintain the desired pressure range.


  • Regulate back pressure with a PolyStream motorized valve assembly, designed to steady an extruder's back pressure within a desired range
  • Reduce material costs and save more salable product with a system designed to provide an automated warning message when excessive screen contamination is causing the integrated valve to approach its opening limit



  • Motor
  • Breaker Plate Screen Pack
  • Linear Valve
  • Pressure Transducers
  • Downspout
  • Control System
  • Optional Display Panel for Control System