The Surge Manhole is an automatic flushing system which has been designed in order to keep drains clear of settleable solids, grits and silts. The build up of silt and sediment within sewerage and stormwater systems have a large number of implications and using a precast concrete surge flushing manhole help these issues.
Visit the Marshalls CPM website for more information on Sewer Cleansing: Surge Flushing Manhole