IMP Armature>Non-return valves>Swing check valves>Art. 438/439 NORVA

Art. 438/439 NORVA

DN 80–300
  • Installation length acc. to BS standard
  • Soft- and metal-sealing possible
  • Lever & weight, guard possible
  • Complete closing even at small pressure difference
  • Low pressure loss due
  • Horizontal and vertical installation possible
  • Easy maintenance – no removal from the pipeline