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First Defense® High Capacity

The First Defense® High Capacity by Hydro International is an advancement on the First Defense® enhanced vortex separator, available in Australia exclusively through Rocla.

The First Defense® High Capacity separator has internal components designed to remove and retain gross debris, total suspended solids (TSS) and hydrocarbons 

Contaminated stormwater runoff enters the inlet chute from a surface grate and/or inlet pipe. The inlet chute introduces flow into the chamber tangentially to create a low energy vortex flow regime (magenta arrow) that directs sediment into the sump while oils, floating rubbish and debris rise to the surface.

Applications:

  • new developments
  • industrial sites
  • construction sites
  • car parks
  • streets and roadways
  • shopping centres
  • maintenance wash-down bays
  • wetland protection

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