Series M

Metso’s Neles® modular ball valve series M, offers optimized performance of pulp and paper applications. Several decades of experience has fine-tuned this product to deliver pulp and paper customers easy product selection with industry leading performance. Valve series includes seat supported and trunnion mounted ball valve designs covering seat types, size ranges and material options offering comprehensive coverage for pulp and paper.

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  • Material option range suitable for P&P applications
  • Tight shut-off and control performance in one package
  • Seat types optimized for common P&P application needs
  • Metso Q-trim® technology for control applications, anti-cavitation and noise reduction
  • SIL 3 certified


  • Easy product selection, optimized for pulp and paper applications
  • Reduced number of valves required, shut-off and control performance in same valve
  • Reduced spare part inventory via product modularity


  • Pulp & paper
  • Digesters and fiber lines
  • Liquor service
  • Chemical recovery
  • Sludge treatment
  • TMP-plants
  • Deinking and recycling plants
  • Steam
  • Paper mill applications


  • Construction:               Flanged, seat supported & trunnion mounted, full bore ball valve
  • Size range:                    DN 25 – 600/NPS 1”–24” (M1), DN 25 – 600/NPS 1”–24” (M2), DN 100 – 400/NPS 4”–16” (M9)
  • Face to face:                 M1: ISO 5752, M2: ASME B16.10, M9: Old Neles series P (internal)
  • Pressure ratings :        EN PN 10-40, ASME 150-300, JIS 10K-20K
  • Temperature range:  -50 °C … +260 °C / -60 °F … +500 °F