HYDROVEX® Flap Spring-Loaded Weir
Sewer systems typically have overflow points to avoid overload of the sewer line and the WWTP. When a defined water level is exceeded in the system, the surplus water is overflowed to the receiving waters. Most overflow points are equipped with fixed static weirs. The crest of the static weir is set using the acceptable upstream backflow in the sewer line with a given design flow and weir length. The height of the overflow weir is of paramount importance as it directly affects the sewer retention calculation. In an attempt to maximize in-line retention volume, long static weirs and correspondingly large overflow structures are required.
The HYDROVEX® Flap Spring Loaded Weir is an optimized overflow weir which is more efficient than a conventional static weir. Due to its proportional overflow characteristics, a spring loaded weir is on average 4 to 10 times shorter than a fixed weir for the same overflow rate and water level. The HYDROVEX® Flap Spring Loaded Weir operates automatically without the aid of auxiliary power, moving bearings, counterweights, pulleys or sliding seals. This results in a highly reliable and efficient equipment with a long service life. Maintenance is minimized due to the weir’s low susceptibility to wear.