Radial “Tainter”-type spillway or 3-side sealing gates are for regulating large flows in spillways, weirs and channels. Their main advantages are excellent control capacity and emergency closing under gravity.

Tainter” gates are made up of the following main elements:

  • Skin plate
  • Arms
  • Rotation shafts
  • Fixed parts
  • Drive device


INHISA HIDRÁULICA S.A. designs “Tainter” spillway gates according to the following principles:

  • Ensuring fail-safe closure under their own weight (without power).
  • With discharge from the top to ensure proper operation and maintenance in the event of overspill, designing the discharge so that the sheet of water or possible floating debris does not impact the arms or the gate structure.
  • Sealing system using neoprene of 65 Shore hardness – stainless steel (fixed parts).
  • Hydraulic drive system.
  • Ball joints on the rotation shafts.