First Defense®  
   

  • Overview
  • How it works
  • Inquiries
  • Animations

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.

 

 


 

 
Literature Downloads
 
First Defense Overview Flyer
 
LEED Applications Overview
 
Perkins Township Case Study
 
 
Technical Downloads
 
Operation & Maintenance Manual
 
Handling & Install Operations
 
General Arrangement Drawing 4-ft
 
General Arrangement Drawing 6-ft
 
Specification 4-ft
 
Specification 6-ft
 
 

Project Information Worksheet

Contact us for additional information