Home ProductsLFX C Series™ – Cartridge Filtration ExcellenceLFX-CSW™ String Wound Depth Filter Cartridges
LFX C Series™ – Cartridge Filtration Excellence

LFX-CSW™ String Wound Depth Filter Cartridges

FiltraCore Asia’s LFX-CSW™ string-wound depth filter cartridges provide robust, economical and high-capacity particulate reduction for industrial water systems, utility-stream conditioning and compatible process liquids. Manufactured using binder-free precision winding, the controlled diamond-pattern winding geometry produces a true graded-porosity structure — coarse outer layers transitioning to progressively finer zones toward the core — enabling high void volume, tortuous flow paths, and exceptional dirt-holding capacity even under variable flow and solids-loading conditions.

The optimised winding tension and yarn uniformity ensure low initial differential pressure (ΔP) and stable, predictable depth-filtration performance throughout the service cycle. Available in polypropylene, cotton and glass-fibre yarns, LFX-CSW™ cartridges offer broad compatibility with industrial water, solvents, plating solutions, light chemicals and general plant utilities, making them a dependable choice for prefiltration, guard filtration and bulk solids reduction where reliability and operating economy are critical.

With industry-standard dimensions and a rigid core structure engineered for mechanical stability, LFX-CSW™ cartridges integrate seamlessly into most common filter housings.

Available in these standardised formats, they serve as direct drop-in replacements for widely used string-wound depth cartridges from major OEMs, including Atlas Filtri® FA Series, Eaton LOFWIND™, Parker Hannifin Fulflo® SWC Series, Pentair/Pentek® WP Series, and 3M™ Micro-Klean™ CS & D Series. This ensures reliable fluid cleanliness, equipment protection and stable upstream conditioning for downstream membrane, polishing or fine-filtration stages across industrial facilities.

Technical Specifications

• Filter Media: String-wound depth-filtration media available in polypropylene (standard), cotton, or glass-fibre, wound without binders or adhesives to minimise extractables. Outside-to-inside flow configuration supports progressive particulate capture, high void volume and extended dirt-holding capacity.
• Core Materials: Polypropylene core (standard). 304 or 316 stainless-steel cores available and recommended for cotton or glass-fibre media, elevated-temperature service or aggressive operating conditions.
• Nominal Retention Ratings: 0.5, 1, 3, 5, 10, 25, 50, 75, 100, 125 and 150 µm nominal depth-filtration grades.
• Nominal Lengths: 5 inch, 9.75 inch, 10 inch, 19.5 inch, 20 inch, 29.25 inch, 30 inch and 40 inch (127–1016 mm).
• Outside Diameter: 2.4–2.5 inch (62–63 mm).
• Inside Diameter: 1.1 inch (28 mm).
• Dimensional Tolerances: Length ±1 percent or ±3 mm (whichever is greater); outside diameter ±1 mm; inside diameter ±1 mm.
• End Styles and Sealing Options: DOE (double open end) standard. SOE options: 222 flat, 222 fin, 226 flat and 226 fin. Elastomer options: EPDM (standard), Silicone, NBR (Buna-N) and FKM (Viton®) on request.
• Operating Temperature Limits (by Construction): Polypropylene media and core up to 80 °C (aqueous service, forward flow). Cotton media with stainless-steel core typically up to ~160 °C. Glass-fibre media with stainless-steel core typically up to ~200 °C in liquid service.

Applications

• Industrial Process Water: Sediment reduction in make-up, rinse and wash streams; used as guard filtration ahead of pleated or polishing cartridges to extend downstream filter life and stabilise system cleanliness.
• RO / EDI Pretreatment: Particulate control to minimise membrane fouling, stabilise differential pressure (ΔP) and support reliable operation in desalination, ultrapure water and high-purity water systems.
• Metal Finishing and Plating: Removal of fines, rust, scale and particulate matter from plating baths, parts washers and recirculating loops; media and core selection must align with process chemistry and temperature.
• Chemical and Coatings: Bulk particulate reduction during blending, recirculation and transfer of compatible fluids; yarn, core and elastomer compatibility must be validated for solvent or additive exposure.
• Food and Beverage Utilities: Prefiltration of incoming utility water, CIP rinse streams and non-sterile process water; food-contact-compliant variants available where required.
• Well Water and Groundwater: Turbidity reduction and removal of sand, silt and suspended solids in commercial and industrial water-conditioning systems.