Custom Engineered Valves
Bending Weirs
Grande Water Management Systems unique and extensively tested bending weir designs operate by allowing any excess water in the system to reach the receiving stream but only after the design upstream water level is reached. This increases the tank and sewer storage volume and reduces the frequency and volume of overflow events, thereby mitigating water pollution.
Bending Weir
Grande Water Management Systems ACU-BEND bending weir is installed on the downstream side and directly over the entire length of the overflow weir opening. It accommodates the overflow by pivoting at the top and swinging open from the bottom.
The bending weir mechanism is entirely passive and does not require any external energy for operation. The fixed counterweights act directly against the bending weir flap to maintain a constant upstream water level for all overflows varying from 0 to the design flow. The ACU-BEND bending weir will also accommodate flows greater than the design flow with a resultant increase in the water level. The operating level can easily be adjusted on site by adding or removing counterweights.
Overflow Bending Weir
Grande Water Management Systems TRU-BEND overflow bending weir is installed on the downstream side and directly over the entire length of the overflow weir opening. It accommodates the overflow by pivoting at the bottom and swinging open from the top.
The bending weir mechanism is entirely passive and does not require any external energy for operation. The fixed counterweights act against the bending weir flap to maintain a constant upstream water level for all overflows varying from 0 to the design flow. The TRU-BEND overflow bending weir will remain fully open and act as an emergency overflow to accommodate flows greater than the design flow with a resultant increase in the water level. The operating level can easily be adjusted on site by adding or removing counterweights.
Hydraulically Operated Bending Weir
Grande Water Management Systems SURE-BEND hydraulically operated bending weir is installed on the downstream side and directly over the entire length of the overflow weir opening. It accommodates the overflow by pivoting at the bottom and swinging open from the top.
The SURE-BEND is equipped with a hydraulic operating cylinder(s) which acts against the bending weir flap to adjust the upstream water level to the desired level for all flow conditions. In case of power failure, it is designed to remain fully open and act as an emergency overflow. The upstream and downstream water levels are constantly monitored.