Filter Ag
is highly fractured edges and irregular surfaces provide a high surface area and complex flow path for efficient removal of suspended matter throughout the filter bed, typically reducing suspended solids down to the 20-40 micron range. Filter-Ag’s larger particle size creates less pressure loss, allows deeper particle penetration into the bed for greater sediment loading, and extended filter run cycles. Filter-Ag relatively lightweight allows for lower backwash flow rates and better bed expansion to release trapped sediment during backwash. Filter-Ag can be used in both pressure and gravity flow systems. It can also be used as a layer in multi-media filter designs allowing a more flexible approach to difficult filtration problems.
Specifications
| Color | Light grey to near white |
| Bulk density | 24-26 lbs./cu. ft |
| Specific gravity | 2.25 gm/cc |
| Mesh size | 12 x 30 |
| Effective size | 0.67 mm |
| Uniformity coefficient | 1.8 |
| Hardness | 6 (Mohs scale) |
| Water pH range | Wide range |
| Maximum water temp. | 140°F/60°C |
| Bed depth | 24-36 inches |
| Freeboard | 50% of bed depth (min.) |
| Service flow rate | 5 gpm/sq. ft., Although considerably higher rates are often used |
| Backwash flow rate | 8-10 gpm/sq. ft. |
| Backwash bed expansion | 20-40% of bed depth |
- Upon installation allow bed to soak overnight before backwashing
- Reduced shipping cost due to light Weight/cu. ft.
- Replacement of sand with Filter Ag in existing installations may increase filter capacity 100% or more. (Caution should be taken upon start-up that the lightweight Filter-Ag is not washed to drain.)
