Mosbaek CEVs reduce the flow thereby allowing for larger openings, hence reducing the risk for blockage. The purpose of the CEV flow regulator is to reduce the risk of clogging whilst protect the downstream parts of a sewerage or stormwater pipe system against overloading and flooding. The CEV is designed to provide the largest possible opening at the given hydraulic situation. The CEV is most often installed as a detachable unit and if required, obstacles can easily be removed in this way.