EBEPLAN Industrial Equipment Ltd.

The HydroBend weir gates can be used for withholding water and for limiting the stored water volume.
Stormwater reservoirs and sewer reservoirs have to be equipped with spill overflows. In the event of heavy rainfall and if the reservoir is full, the overflows divert excess water into the adjacent watercourse. The HydroBend weir gate is installed at the level of overflow threshold, and they keep constant water level. It has a hinged support at the bottom. When the water level exceeds the desired level, then the gate is lowered, water flows over the upper edge of the gate.
No external energy source is required for the equipment, and it has a modular structure. It can be retrofitted to existing facilities. It is a robust steel structure made of stainless steel (1.4301) or acid resistant steel (1.4571).

This kind of equipment is used for limiting water flow in channels, water courses and other large diameter passages in one direction. The flap valve is closed normally, which is further pressed onto the closing elements by the incoming water, so the retained water cannot flow into the channel. On the other hand, the cover of the flap valve opens even when a minimum water level appears from the inside, so that water can flow in this direction.
The flap valves are made from stainless steel (1.4301), acid resistant steel (1.4571), or hot dip galvanizes carbon steel, or high strength HDPE plastic, if required. The size may be in the range from DN 125 to DN 1200, or it can also be ordered in larger size in case of special need.
The flap valves are dimensioned normally to resist a pressure of 6 m water column, but we are ready to prepare it in strengthened version if necessary.
When the purpose is to protect sewer networks, then we are ready to prepare flap valves with many different shapes and dimensions as well.

With the use of HydroStyle flow brake structure (i.e. by utilizing the existing storage capacity of the sewer system) the purpose is to reduce costs as much as possible and to protect the environment.
Stormwater reservoirs having the function of protecting surface waters are often omitted because of the high capital expenditure required. At the same time, the existing sewer systems (which are generally dimensioned for the peak loads), have extremely large storage capacities, the utilization of which would be very convenient. This purpose can be well accomplished with the HydroStyx discharge brake system, which is to be used right from the uppers sections of the sewers forming a cascade configuration in the subsequent parts of the sewers. The construction of the brakes allows their installation into the existing shafts. The calculated water quantity flows through the bottom orifice to the subsequent part of the sewer. Rainwater tends to accumulate in front of the flow brakes when the rainwater quantity increases. The debris in the water sinks and is carried to the wastewater treatment plant with the flow close to the bottom. At the time of heavy raining the combined water flows over the crest of the brakes. As a result, the sewer regains full capacity again.

These structures could have many different designs when prepared for various purposes, such as flood control, separation of pool parts or sewer sections, or for holding water for other functions

The structure consists of lateral recipient frames aligned vertically, in which horizontal insert girders could be placed manually or with lifting devices. Hold-down mechanisms are located above the topmost girder, which have a function of compressing the girders that could be fitted together with sealing profiles. The compressed girders can provide a closing quality corresponding to the German closing standard DIN 19569-4.

The material of the recipient frames is stainless steel (1.4301) or acid resistant steel (1.4571). The material of the insert girders is aluminium generally, but it could be made also from stainless steel if specifically ordered.

The mode of fixing the mobile walls could vary depending on the water to be retained and on the size of the orifice to be closed. Concrete foundation is necessary at the bottom in case of high water level and long orifice. It could be sufficient to fix the mobile barrage to the side walls in case of small orifices and/or low water level, as well as when the purpose is the protection of some facilities.

Photos: Ágoston Dezső - Origó

Structures used in wastewater treatment plants, hydraulic facilities, industrial plant and other locations for controlling or stopping the flow of water.
Depending on the principles of operation and functions they have various designs, and can be operated manually or with electrical motor. Primarily, we manufacture sluice gates for closing orifices (closing at 4 points) or sewer system sluice gates (closing at 3 points) with the possibility of variable crest.
The design of the sluice gate is also influenced by the size of the orifice to be closed, as well as by the height of water to be retained. Booster equipment and/or electrical drives could assist the structures intended to close large surfaces. We can produce sluice gates with double panels as well if requested specifically.
The material of the sluice gates could be stainless steel (1.4301) or acid resistant steel (1.4571), or eventually hot dip galvanized carbon steel.

In case of hydraulic facilities, power plants, large industrial plants and sewers of large cities it is required to close orifices having width and or/height exceeding a couple of metres. The large closing structures used in such cases control or fully stop the water flow.
Their engineering design is made entirely on a case by case basis always depending on the orifice dimensions and the level of water to be handled. With regard its material, it is possible to make them from corrosion resistant steel (1.4301), acid resistant steel (1.4571) or hot dip galvanized carbon steel.
The closing with divided panels is recommended in case of high water level, where the panels occupy less space in open condition.
The manipulation of large sluice gates is always made with booster devices or electrical drives.