Hydrok Letterbox Screens™

During times of rainfall the sewerage systems within our networks become overwhelmed
with combined sewage and rain water which can cause particular problems within pumping
stations. In order to prevent the flooding within the pumping station an overflow weir
should be fitted to allow discharge into the water course. These receiving waters are
protected through the installation of Combined Sewer Overflow (CSO) Screens. These
screens are designed to prevent sewage debris from passing over the weir, retaining
it within the pumping station.

The Hydrok Letterbox Screen is designed for use in confined spaces where larger CSOs
are not suitable and are a standard modular panel size which can be replicated to suit
flow requirement – all are a standard 505mm wide by 1000mm modular unit. The Hydrok
Letterbox Screen is suitable for rectangular or circular chambers and is delivered as
a self assembly flat pack for self installation or the Hydrok engineering team could
complete the installation as required.