Products Description
The 5 micron string wound sediment filter is manufactured by wrapping a continuous fine rope (usually polypropylene PP fiber) around a porous center tube (usually PP or stainless steel) at a specific density and angle. Its core functions are:
- Precision filtration: effectively intercept suspended particles (such as sediment, rust, colloids, algae) in water ≥5 microns.
- Deep purification: Gradient filtration is realized through multi-layer wire-wound structure, and the dirt-holding capacity is far more than ordinary PP cotton.
- Equipment protection: prevent downstream precision equipment (such as RO membrane, UV sterilizer) from being clogged and damaged by particles.

How it Works:
String wound sediment filters follow the principle of depth filtration:
- Water flows in under pressure from the outside.
- Passes through the wound string matrix.
- Particles trapped on fibers or between gaps.
- Trapped particles build up, aiding filtration.
- Clean water flows out via the central core.

Technical parameters
| Product | 5 Micron String Wound Sediment Filter |
|
Micron Rating |
0.5-150 Microns |
|
Nominal Lengths |
4 3/4", 4 7/8", 9 3/4", 9 7/8", 10", 19 1/2", 20", 29 1/4", 30", 39", 40" |
|
Outside Diameters |
2", 2 3/8", 2 1/2", 2 3/4", 4 1/2" |
|
Inside Diameter |
1" |
|
Recommended Change-out Differential Pressure |
20 psid (1.4 bar) |
|
Materials of Construction |
Filter media: Polypropylene, Cotton, Polyester, Glass Fiber Skeleton: PP, Stainless Steel, Tin Steel |
Maximum Operating Temperature
|
Material |
Polypropylene skeleton |
Metal skeleton |
|
Cotton |
60°C |
121°℃ |
|
Glass Fiber |
60°C |
402°C |
|
Nylon |
60°C |
135°C |
|
Polypropylene |
60°C |
82°C |
|
Polyester |
60°C |
135°C |
|
Rayon |
60°C |
135°C |
Key features
✅ Gradient deep winding technology: 50%+ increase in dirt-holding capacity over ordinary PP cotton, reducing the frequency of replacement.
✅ 100% Absolute Precision Guarantee: hard interception of ≥5μm particles.
✅ Food-grade PP fiber: FDA compliant, no risk of chemical leaching.
✅ All-scenario adaptability: compatible with cartridges for home/industrial applications (10"-40" general purpose) to support high flow rate requirements.
applications
| Fields | Uses | Typical materials |
| Electronics/Electricity | Pure water, plating solution, PCB board cleaning filtration | Glass fiber/PP |
| Petrochemical | Fuel oil, acid and alkali solvents, coating resin decontamination | Glass fiber/stainless steel skeleton |
| Food & Beverage | Fruit juice, edible oil, wine clarification filtration | PP cotton (FDA standard) |
| Biopharmaceutical | Water pretreatment for injection, sterilizing medicinal solution | Degreased cotton/PP |
| Environmental protection and gas | Industrial wastewater pretreatment, compressed air oil removal Dust removal | Multilayer composite wire wound |
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