HYDRAULIC WORKS

Flap Gates

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Flap gates (also called Tilting Gates) are mainly employed to control the flow of water through flood barriers, reservoirs and rivers.
Flap gates are of a heavy duty structural design consisting of a steel reinforced skin plate the outer side of which is loaded against the water pressure when the gate is in a closed position.
The Flap Gates are designed to operate in a vertical position whereby they restrict the main flow of water but at the same time create a ‘water jump’ over the top of the gate, from upstream side to downstream side of the gate. When the Flap Gates are fully open they lowered to the bottom level of the river so enabling full water flow to pass over them.
The Flap Gates are fabricated in steel plate that is suitably reinforced with various steel sections to withstand the water pressures. Vortex Hydra, as part of their design criteria, normally recommend the grade of steel to be used, but any special request from the customer can be analysed and agreed on.

The operational system of the gates could consist of the following:
• Twin hydraulic cylinders located under the flap on the downstream side
• Special operational system defined and agreed with the customer

Sealing System: rubber seals located in both the bottom foundation beams and side edges of the gates seat into a stainless steel sealing frames that are attached to adjacent pier mounted lateral shields.
All phases of the engineering design and fabrication through to final testing are undertaken by Vortex Hydra in compliance with UNI EN ISO 9001 Quality Management System.
Vortex Hydra design and manufacture Flap / Tilting Gates having dimensions up to 10 x 6m.

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