As the outer water level increases, the gate closes from bottom to top due to buoyancy, blocking backflow water immediately without the blocking of foreign substance
Rapid inner water elimination- As the outer water level decreases, the gate opens from top to bottom due to the weight of gate, and foreign substances like branches are released rapidly with the inner water.
Gate (buoyant body) and hing 01 e are located at the bottom, so the gate closes by buoyancy and opens by gravity
Not limited by time or space, operates in case of emergency, and secures water tightness as outer water level increases due to increase in water pressure
Effective backflow prevention and drainage due to changes in opening/closing speed of gate according to rising/falling speed of outer water
Long persisting period through stainless steel, which has outstanding corrosion resistance and durability,
and
does not require a separate operator or power that it is economical
Gate is normally opened that it is used as an ecological passage, and drains immediately for contamination
and
odor prevention, so it is eco-friendly
