Surface water drainage systems


Full retention separators

For high risk applications such as petrol filling stations and heavily contaminated industrial
areas where it is possible to have a constant stream or major spillage of pollutants


Bypass separators

  • Full treatment of rainfall flows of up to 5mm/hr (99% of rainfall events)
  • Automatic closures are not appropriate for bypass separators, but filters for class 1 models, and monitors for both Classes, are usually fitted
  • Single shaft access on Class 2 models allows improved cost savings