Hydro Overspeed Detector type « HOD »



  • Overspeed detection on penstock head valve

Key Features

  • Design pressure: PN2,5 to PN50
  • Full system in stainless steel
  • Standard connection flanges or existing adapted ones
  • Mechanical rotated system with in water flow paddle and adjustable counterweights
  • Counterweights in two pieces to allow a quick paddle detection in the water flow without dismantling the system

Design adapted to customer service conditions

  • Complete range of pressure, diameter
  • Electric, hydraulic or both or mechanic trigging


  • Under water pressure extraction system patented by D2FC