Main applications

  • Desalination
  • Irrigation
  • Lake, Damwater extraction
  • Rawwater transport
  • Water
  • Water Extraction
  • Watertransport
  • Watertreatment

Technical data

T max 65 °C
DN max 1,400
PN max 40


Combined butterfly/check valve with single-acting hydraulically controlled counterweight actuator. For mounting on valves with DN 500 to 1400.


For installation in the pump discharge lines of pumping stations. Power station cooling circuits. Protects pipelines and turbines.

Further technical information about DUALIS

Overview of technical data

T -10 – 65 (°C)
DN 500 – 1,400
PN 40
Main applications Industry and process engineering, Water, Energy
PN min. 6