Roller gate _ Under construction
The water sealing method of the roller gate is generally divided into 3-way water sealing and 4-way water sealing. The hydraulic load is separately supported by more than four rollers (two rollers on one side) at the time of ascending/descending. As the opening/closing load (frictional force) becomes small, this method is widely used in cases where the level difference is large during operation or a large gate is used.
Roller gate – after construction