0183 Spring-loaded Weir UFT-FluidFlap

Intended Purpose

The Spring-loaded Weir UFT-FluidFlap is a self-regulating discharge device for use as an overflow weir at combined sewer overflow tanks and in other storage structures. Compared to a fixed weir, the flap has a much lower apparent overflow head for the same discharge and the same length and keeps the water level almost constant after the discharge has started.

Properties of the Spring-loaded Weir UFT-FluidFlap

  • considerably greater discharge capacity than with a fixed overflow sill
  • the rise in the water level from the beginning of the overflow to large discharges is limited to a few centimeters
  • activation of additional storage volume, at the same time avoiding an excessively high water level in the inlet sewer
  • significant reduction in the length of the overflow weir and thus also in the size and costs of the structure
  • reduced discharge of pollutant particles transported near the sewer bottom (bed load) because the water is passing over the weir rather than underneath
  • automatic operation without external energy
  • flex free and torsionally rigid construction made of stainless steel
  • resetting mechanism in the form of space-saving  arranged compression springs
  • no cables, counterweights or cam discs
  • high operational reliability
  • long lifetime, low wear tendency