First Defense®  
   

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Ideal source control for small sites and surface runoff

The First Defense is an enhanced vortex separator that provides stormwater treatment in a surface inlet device. The integral bypass and large pipe sizes convey a wide range of flows without risk of washout and surface flooding.

Perkins Township, Ohio used the First Defense to take advantage of the cost savings, easy maintenance and smooth installation - See Case Study 

Applications

  • Small to medium size catchments
  • New developments and retrofits
  • Source control for streets, parking lots and maintenance yards
  • Pretreatment for filters, infiltration and storage
  • LEED® Sites

Advantages

  • Catch basin and separator in one device
  • Built-in bypass for peak flows
  • In-line configuration
  • Prevents pollutant washout
  • Low headloss
  • Compact and flexible design