Concrete manhole DN 1050

Precast concrete catchpits with the new flexible rubber pipe connector seals can be utilised every 100 metres on a single lane carriageway, replacing the requirement to cast a base sump in situ and construct the catchpit from a standard DN1050 manhole ring. The innovative EPDM 40 flexible rubber seal at the connection points can accommodate pipe sizes DN150 to DN 300, including DN225. This negates the need to saw cut openings in the concrete wall and the use of wet mortar trades to seal the pipe surround.