Specifications
| Media type | High-purity copper-zinc alloy (redox process media) |
|---|---|
| Target contaminants | Chlorine (KDF 55); ferrous iron & hydrogen sulfide (KDF 85); heavy metals; scale & microorganism control |
| Service flow rate | ~15 gpm/ft² (611.2 lpm/m²) |
| Backwash flow rate | ~30 gpm/ft² (1222.4 lpm/m²) for 10 min, then 3 min purge/rinse |
| Bed expansion (backwash) | 10 to 15% |
| Freeboard | 20% |
| Minimum bed depth | 10 in (25.4 cm) for a 6 in diameter system |
| pH range | 6.5 to 8.5 (drinking water) |
| Water temperature | 1.7°C to 100°C (35°F to 212°F) influent |
| Max contaminant concentration | 5 ppm chlorine, iron, or H2S |
KDF 55 is engineered for chlorine reduction in point-of-entry municipal water; KDF 85 reduces ferrous iron and hydrogen sulfide in groundwater. Both grades extend the life of downstream carbon, softeners and RO by controlling scale and microbial growth without chemical addition. Proper system sizing to service flow is the single most important factor in performance.
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