Drinking & Specialty
The Symphony Ultrafilter filters to 0.015 micron — a self-cleaning whole-home barrier giving 99.99% (4-log) reduction of bacteria, cysts and viruses, at up to 15 gpm per unit and configurable up to 45 gpm.

We install the Symphony Ultrafilter (CS-SYM-UF) — a sub-micron, self-cleaning whole-home barrier. It filters down to 0.015 micron and delivers 99.99% (four-log) reduction of any solid larger than 0.015 micron, including bacteria, cysts and viruses, and also addresses colloidal clay, turbidity and high-molecular-weight organics. It’s a standalone product — install it on its own or alongside other Crusader systems (well water, rainwater reclamation, or as a final barrier).
A single unit treats up to 15 gpm, and multiple-unit configurations handle up to 45 gpm — sized for real homes and light-commercial demand, not just low-flow setups. Self-cleaning cycles extend cartridge life, it runs on normal line pressure (30–80 psi), and each cartridge treats up to ~1,000,000 gallons. Optional post-cartridges add chemical reduction and scale control. A 10-micron prefilter is recommended ahead of the unit.
Microplastics: because the membrane filters to 0.015 micron — far smaller than a microplastic particle — it physically blocks microplastics, making it an effective whole-home option for reducing them. (NSF P231 microbiological certification is pending; the unit is engineered to the EPA Guide Standard and Protocol for microbiological water purifiers.) Symphony cut sheet (PDF) · configuration manual (PDF).
A true “final barrier” against suspended solids
Backwashes, forward-flushes and disinfects itself
Bacteria, cysts and viruses larger than 0.015 micron
Handles colloidal clay, turbidity and organics
0.015-micron pore is far smaller than a microplastic particle
Up to 15 gpm per unit; configurable up to 45 gpm
The Symphony Ultrafilter pushes water through a sub-micron membrane down to 0.015 micron, physically straining out suspended solids, bacteria, viruses, cysts, mold, high-molecular-weight tannins and turbidity while letting clean water pass at normal line pressure — for 99.99% (four-log) reduction of solids larger than 0.015 micron.
The unit backwashes, forward-flushes and disinfects itself on a programmed schedule to extend cartridge life (up to ~1,000,000 gallons). A single unit treats up to 15 gpm, and multiple-unit configurations meet higher demand up to 45 gpm, or feed a storage tank.
Performance (Symphony Ultrafilter CS-SYM-UF)
| Specification | Value |
|---|---|
| Filtration level | 0.015 micron |
| Flow rate | Up to 15 gpm per unit; configurable up to 45 gpm |
| Pathogen reduction | 99.99% (4-log) of solids > 0.015 micron (bacteria, cysts, viruses) |
| Cartridge life | Up to ~1,000,000 gallons |
| Operating pressure | 30–80 psi |
| Water temperature | 40–80 °F |
| Drain flow rate | 3 gpm |
| Electrical | 110 VAC |
| Prefiltration | 10 micron |
| Certification | NSF P231 pending (EPA microbiological purifier protocol) |
Raw-Water Requirements
| Parameter | Limit |
|---|---|
| Pre-filtration | 10 microns or less |
| Chlorine | ≤ 1.0 ppm continuous (up to 2,000 ppm for cleaning only) |
| Iron | < 0.30 ppm |
| Manganese | < 0.05 ppm |
| Silt Density Index | < 6.0 |
| pH | 3–11 |
| Installation | Pressure Decay Test (PDT) required at install |
Specifications from the manufacturer (crusaderwater.com). Your installer will confirm the right model for your water and household.
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