Improving the customer process reliability, safety and efficiency


  • Metal to metal seating offers long lasting tightness and low maintenance cost.
  • PZ capping offers compact way of incorporating safety interlocks by two pressure sensors mounted on valve body to prevent unintentional valve operation when digester is pressurized.
  • Valve lower flange is custom-made to match the digester top flange allowing easy installation to existing digester vessel.


  • Neles PZ capping valve improves plant efficiency by reducing filling time by automated valve open / close operation.
  • Valves enable secure operation and full automation of digester chip fill process. This enables increased productivity and safety for process operators.
  • Fast return on investment due to increased productivity and minimal need to modification on existing digester.
Design Full bore ball valve
Size range Size range: DN 500 and 600 / NPS 20” and 24”, bottom flange modified in accordance to digester top flange 
Pressure classes PN 16 & ASME 150
Temperature range up to +200 °C / +390 °F
Technical bulletin Download
Installation, maintenance and operation manual Download

Previously viewed products