• HydroBend Weir Gates
HydroBend Weir Gates

Adjusts overflow heights,
increases storage volume
electric, hydraulic or external energy-free

The Challenge

Stormwater retention basins, rainwater tanks and canal networks have to be equipped with spillway dams. In the event of heavy rainfall, they divert excess water into the surrounding bodies of water. The upper edge of the spillway dam is the maximum storage level with which the chargeable storage volume is determined, whereby the overflow height (h0) should not be taken into consideration. Installation of Steinhardt HydroBend Weir Gates allows the overflow height h0 to be utilised in the determination of the chargeable storage volume.

The Way

The installation of the HydroBend weir gates on the spill­way increases the water level by the value of the overflow height h0. The new maxi­mum storage level is kept constant in the centimetre range without an external energy source. Excess water resulting from an inflow which exceeds the outflow of a dammed basin will be discharged by the HydroBend weir gates as they adjust to the variable loads.

The Solution

HydroBend weir gates are mounted on spillway dams. They are bottom-hinged. If the water level exceeds the maximum storage level, the weir gate lowers. The water is discharged via the upper edge of the gate. The water level then sinks to the maximum storage level. If the water level continues to reduce, the weir gate is raised until the maximum storage level is reached again or until the discharge is completed.

HydroBend weir gates can be controlled electrically, hydraulically or without a power source using a counterforce system. The weir gate, operated by adjustable counterweights, cables and control valves, is lowered and raised in proportion to the water level/water pressure. The control valve, computable for various tasks, is decisive for the exact maintenance of the maximum storage level. In the event of backpressure, the counterforce power plant can be optionally upgraded and the reduction of the overflow quantity can be compensated with retention of the maximum storage level. Further details on enquiry.

Alternatively, the weir gate can be provided as a flood protection valve. In addition to the discharge frequency, the overflow quantity can also be computed by means of an optional rotary valuator.  The date can be recorded or transmitted. Installation can also take place in open channels leading to the treatment plant. We would be pleased to provide further information.

The Advantages

  • activates storage volume
  • keeps water level constant
  • reduces discharge frequency
  • protects bodies of water
  • no external energy required
  • modular structure
  • reliable operation
  • retrofittable
  • low-maintenance
  • robust stainless-steel construction
  • optional backpressure compensation
  • optional backpressure safeguard
  • optional remote effect, angular measurement