• RÜ-Stauklappe-S

› Constant upstream water level is maintained
› 100% use of the available in-system storage volume
is possible
› Reduced construction costs because retention
basins can be downsized
› retro-fitting into existing basin overflows possible
› Stainless steel construction ensures reliable trouble
free operation
› Virtually maintenance free



The Overflow Bending Weir Type O is designed to maintain maximum water storage levels upstream of the weir thus allowing full usage of all the available upstream storage volume, while not adversely affecting the overflow weir capacity.

Once a combined sewer overflow tank (or sewer) or a stormwater overflow tank (or sewer) is full, any additional influent water must be able to reach the receiving stream. The traditional way of accomplishing this was by using fixed weirs. However, fixed weirs have inherent disadvantages including: increased water pollution, lower usable tank and sewer storage volumes and no backflow protection. To avoid these disadvantages, increasing use is made of bending weirs such as the uniquely designed Overflow Bending Weir Type O.

The Overflow Bending Weir Type O is designed to open just enough to allow the additional influent water to overflow the weir while maintaining the maximum allowable upstream storage water level. This ensures that the frequency of overflow events is diminished which results in reducing the discharge of highly polluted water to the receiving stream.


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