Steel Flap Gate

Steel flap gates are hydraulic structures that combine steel construction with the flap principle, primarily used for river regulation, reservoir control, and urban flood protection projects. Their key features include:
Structural Composition
Comprising a gate body frame, drive shaft, hydraulic system, and civil structure, they utilize steel materials with the main frame welded from high-quality steel for high strength and stability. The gate plates are typically made of steel, with thickness and material selected based on project requirements, and surface anti-corrosion treatment to extend service life.
Functional Characteristics
Bidirectional Water Retention: Adjustable water levels to create artificial waterfall landscapes;
Stepless Water Regulation: Achieves 0-90 degree free adjustment via the hydraulic system;
Aging Resistance: Steel structure design outperforms traditional rubber dams;
Automatic Control: Maintains set water level ranges by integrating hydraulic self-control principles.
Technical Parameters
Suitable for river widths of 10-100 meters and water level differences of 1-7 meters, with faster opening/closing speeds than rubber dams and excellent sealing performance (forward leakage ≤0.72 liters/minute·meter). Modern improved versions employ crank-arm structures to reduce bottom shaft torque, supporting single-span applications exceeding 60 meters.