Lohse type CNA

Lohse knife gate valve type CNA

Lohse type CNA is a stainless steel knife gate valve suitable for pulp and slurry-shaped media with a fairly high solid particle content up to 4.5%.  The valve plate is designed in such a way that the settling and accumulation of solids are prevented.  

All Lohse valves use the Lohse modular actuator system in which a decision can be made between manual actuation (handwheel, handwheel with rising stem, T-spanner, chain) and non-manual actuation (electric and pneumatic).  

Lohse meskant plaatafsluiter type CNA


  • Range: DN50 to DN2000  
  • Pressure: 0 barg to 25 barg 
  • Temperature: -10⁰C to 210⁰C  
  • Design:  two-piece stainless steel housing (3.16L) with polymer (GRP/PP) slide cups  
  • Tightness: single-sided, 100% waterproof  
  • Application: solid particle content below 4.5%  
  • Exotic materials possible: yes 
  • The standard seal for type CNA is EPDM. 
  • NBR, FKM and PTFE seals are available as well. 


Lohse knife gate valve type CNA can be used wherever the medium contains solid particles. The knife-edge valve plate is designed to cut through the medium. This valve is used for pulp and paper applications, sewage and water treatment processes and applications where the medium contains fibres, potatoes, cement, plaster, dust and other solids. 

The CNA can be equipped with various actuator systems and be adapted to specific circumstances.  The compact design features polymer slide cups that minimise internal spaces as well as required tightening torque. 

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