When the water level in the external receiving body/stream water level well is reached, the rotating weir gate height will always keep the exterior water level, achieving the anti-backflow function.

Hydraulic rotary weir gate operation principle
The fluid-driven rotating weir gate is composed of the weir gate body, hydraulic cylinder telescopic arm, water level monitoring system, and hydraulic control system.

Hydraulic rotary weir gate technology advantages
Real-time monitoring of internal and external liquid levels in the drainage network
■Special sealing structure, ensuring zero leakage on all four sides
Achieve the closure of the overflow port

During the dry season and light rain, the weir gate is closed to function as a wastewater cutoff well. When heavy rain arrives and the water level in the well rises too high, the anti-backflow weir opens to release floodwater, preventing wastewater in the well from causing internal flooding.