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HydroFlex™ Units

The HydroFlex™ units are gravity drainage and forming units located immediately after the Forming Board. These units are equipped with CoorsTek's VersaFoil® blades to allow "on the run" adjustment of the foiling angle, depending on the desired drainage rate and activity levels. The HydroFlex units can be coupled to our GL&V FFS controls system to give the papermaker the ability to independently adjust the foiling angle of each VersaFoil blade to optimize stock activity and drainage. Our feedback positioning system allows an accurate and repeatable positioning of each VersaFoil blade. The system will also allow the storage of every adjustable blade position in the PLC memory according to each grade produced for a quick and accurate system positioning when changing grades

As machine speed and basis weight have a direct impact on stock behavior on the table, the HydroFlex Units will insure that the gravity section is optimized for every machine condition.


  • Heavy duty robust design for maximum stiffness and minimum deflection.
  • 316L stainless steel construction of all wetted surfaces. 
  • Designed with the proper blade pitch for your specific operating conditions.
  • Blade material options: Standard Poly, GL&V long lasting EVO2® Poly Alloy or Premium Aluminum Oxide ceramic. The Coorstek VersaFoil® blades are made of Premium Aluminum Oxide Ceramic.
  • Gives the papermaker the flexibility to adjust the foiling angle on the adjustable angle foil blades to get optimum drainage and sheet characteristics for each grade and machine operating conditions. 
general requests

HydroFlex™ Units

The HydroFlex™ units are gravity drainage and forming units located immediately after the Forming Board. These units are equipped with CoorsTek's VersaFoil® blades to allow "on the run" adjustment of the foiling angle, depending on the desired drainage rate and activity levels. The HydroFlex units can be coupled to our GL&V FFS controls system to give the papermaker the ability to independently adjust the foiling angle of each VersaFoil blade to optimize stock activity and drainage. Our feedback positioning system allows an accurate and repeatable positioning of each VersaFoil blade. The system will also allow the storage of every adjustable blade position in the PLC memory according to each grade produced for a quick and accurate system positioning when changing grades

As machine speed and basis weight have a direct impact on stock behavior on the table, the HydroFlex Units will insure that the gravity section is optimized for every machine condition.


  • Technical Information

    • Heavy duty robust design for maximum stiffness and minimum deflection.
    • 316L stainless steel construction of all wetted surfaces. 
    • Designed with the proper blade pitch for your specific operating conditions.
    • Blade material options: Standard Poly, GL&V long lasting EVO2® Poly Alloy or Premium Aluminum Oxide ceramic. The Coorstek VersaFoil® blades are made of Premium Aluminum Oxide Ceramic.

  • Benefits

    • Gives the papermaker the flexibility to adjust the foiling angle on the adjustable angle foil blades to get optimum drainage and sheet characteristics for each grade and machine operating conditions. 

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