Rising Sector Gates

These gates are mainly used for the control of flows and levels in rivers.


  • Quick operation as they move in an arc.
  • The entire water load is transferred radially through the arms to the pivots which gives reduced hoist capacity.
  • Gives an unobstructed passage for movement of river traffic.
  • Torsionally rigid to allow operation from one side.


  • A recess is required in the floor for the gate to occupy which could be a problem where there is high silt content.
  • Internal confined space for maintenance.
  • Curved fabrication requires an assembly jig.