Sizing of Grease Removal Devices
In order to perform correctly, grease removal devices must be adequately sized to allow the grease and settleable solids to separate within the device. The Gravity Grease Interceptors Sizing Table below is based on the number of Drainage Fixture Units (DFUs) within the kitchen or source and the type of grease removal device used.
Gravity Grease Interceptors Sizing Table
| Drainage Fixture Units (DFUs) | Gravity Grease Interceptors Volume (Gallons) |
|---|
| 8 | 500 |
| 21 | 750 |
| 35 | 1000 |
| 90 | 1250 |
| 172 | 1500 |
| 216 | 2000 |
| 307 | 2500 |
| 342 | 3000 |
| 428 | 4000 |
Example #1: Typical fast food kitchen = 17 DFUs = 750 gallon GGI
Example #2: Typical larger kitchen = 45 DFUs = 1250 gallon GGI
Hydromechanical Grease Interceptors
View more of the Hydro-Mechanical Grease Traps Calculation Sheet (PDF).
If you have any questions or would like additional information, please feel free to contact the Lake County Special Districts Administration at 707-263-0119.