Steel Flap Gate

The steel flap gate is a hydraulic facility that combines the advantages of hydraulic self-control and steel structure, primarily used in river regulation, reservoir water level control, and urban flood prevention. Its core features include bidirectional water retention, stepless water regulation, strong durability, and faster opening and closing speeds compared to traditional rubber dams.
Structural Composition
Mainly consists of the gate body (including panels, legs, and piers), drive shaft, hydraulic system, and civil structure, constructed from steel materials with surface sandblasting for rust removal and hot-dip galvanizing for corrosion protection. The gate body includes movable panels and fixed embedded parts, utilizing linkage rollers for automatic water level regulation.
Functional Features
‌Bidirectional Regulation‌: Capable of bidirectional water retention and adjusting water level differences, suitable for scenarios with 1-7 meter water level differentials.
‌Automatic Operation‌: Utilizes the principle of hydraulic and self-weight balance to automatically open or close based on water level changes.
‌Durability‌: Made from Q235B low-carbon steel or stainless steel, with surface sandblasting for rust removal and hot-dip galvanizing for corrosion protection, ensuring a long service life.
Application Scenarios
Suitable for river regulation, hydropower station water diversion, urban flood prevention projects, and particularly advantageous in small to medium-sized hydraulic engineering due to its simple structure and low cost. Some improved models use a crank arm structure to reduce bottom shaft torque, supporting single-span applications exceeding 60 meters.