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Selecting your valves

Service conditions

  •  Fluid used:
    • Phase: gas, liquid or powdered
    • Nature: water, air, petrol, solvent…
    • Classification acc. to Regulation n°1272 
      (hazardous, non-hazardous)
  • Operating pressure: allowable maximum and minimum
  • Operating temperature: allowable maximum and minimum

Type of valve and its functionality

  • Type : Ball valve / Butterfly valve / Globe valve / Needle valve / Gate valve / Knife gate valve / Check valve / Control valve / Satefy valve / Pressure regulating valve / Strainers / etc.


  • Function : sectioning, regulation, balancing, safety, passing, releasing...



  • Material of the body, the closing member, the seats and gaskets
  • Nominal diameter and bore
  • Type of connection:
    • Threaded: BSP/NPT/SMS
    • Welding: SW/BW
    • Flanged: various standards
    • Quick couplings (camlock, symmetrical, clamp,...)
  • Face-to-face dimension acc. to EN 558 or others
  • Type of operation:
    • Manual valves: handle, handwheel, lever, gear box
    • Actuated valves: pneumatic, hydraulic, electric

Other factors


  • Environmental conditions & installation location of the valves
  • Standards: ISO, EN, ANSI, other specific national standards, fire safe, fugitive emissions...
  • Required certification: CE-PED, ATEX, inspection documents acc. to EN, hydraulic test 
  • Service lifetime, cycles and expected wear
  • Maintenance procedures and spare parts availability