Crest Gate

Gates

It consists of a straight or curved retaining surface, pivoted on a fixed axis at the sill.

Flap gates are also used on top of segment gates and fixed-wheel gates.

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Pros

Great operational flexibility (passage of ice and other floating materials)
Discharge of large water volume
Fail safe design for opening (Gravity opening)
Compact design
Less hoisting capacity required
No possibility of trash accumulation in slots
Smaller overhead structure
Operating mechanism provides effort only when raised (single action)
Allows precise regulation of the reservoir level.

Cons

Permanent immersion of the hinge bearings and inability to inspect said bearings
Maintenance of gate seals
Complex operation in ice condition
Possibility of accumulating debris and ice on downstream side

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Related project(S)

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