Anthracite Filter Media is commonly used as sub-fill and as a component of multi-media filters. Anthracite is a durable media with long life and a wide temperature range. It contains no silica to interfere in the production of ultra pure water.
| Color | black |
|---|---|
| Bulk Density | 50 lbs./cu. ft |
| Specific Gravity | 1.65±0.05 |
| Uniformity Co efficiency | 1.3 – 1.7 |
| Hardness | 3.0 – 3.8 (Mohs scale)Operational Specifications |
| Bed depth | 24 – 36 in., 10 - 18 in. for multibed filters |
| Freeboard | 50% of bed dept (min.) |
| Service flow rate | 5 gpm/sq. ft. or higher depending upon local conditions |
| Backwash flow rate | 12 - 25 gpm/sq. ft. depending upon mesh size |
| Backwash expansion rate | 20 – 40% of bed depth |