Dewatering elements for board and paper machines

Dewatering equipment beneath the forming fabric helps drain water from the stock and conduct it away into the whitewater system. Proper initial drainage is important whether your priority is to increase production capacity or improve quality, or both.

Valmet offers a comprehensive range of polyethylene and ceramic dewatering elements to suit virtually all positions and OEM machine configurations.


  • Easy and safe installation
  • Low friction
  • Global support and expertise available close to you
  • Fast turn-around time
  • Available for all OEM designs



Dewatering Element Poly S



  • UHMW polyethylene suitable for many wet end applications
  • Typical maximum machine speed < 460 mpm






Dewatering Element Poly D



  • Outperforms standard polyethylene by at least 4 times
  • Offers tremendous wear resistance
  • Valmet’s Poly D technology is a true polyethylene compound that does not suffer stress cracking or thermal shock damage
  • Typical maximum machine speed < 760 mpm
  • Supplied to 200 mills worldwide


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Dewatering Element Ceramic



  • Wear resistant materials offer long and trouble-free operation and optimized dewatering
  • Short delivery times
  • Grinding and repairing service available


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Ceramic dewatering element positions on OptiFormer multi forming section

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1. Forming board

2. HydroFoil

3. VacuFoil

4. High-vacuum foil box (wet suction box)

5. Support Foil

6. Transfer Suction Box

7. HiVac1

8. HiVac2, HiVac3

9. Top Suction Formation Shoe