Single Layer Nominal Filter Bags

Cotton Felt Single Layer Nominal Filter Bags

Cotton felt single-layer nominal filter bags are natural fiber-based filtration media designed for cost-effective, general-purpose liquid filtration. Made from compressed cotton fibers, these bags provide depth filtration, capturing contaminants throughout the felt matrix. They are an environmentally friendly option with good absorption properties, suited for applications where natural fibers are preferred over synthetic alternatives.

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Operation

Process liquid flows from the inside to the outside of the bag. Particles and sediments are retained within the cotton felt depth matrix. Clean liquid exits through the filter housing outlet. Typically disposable, though limited reuse is possible depending on the application.

  • Made from natural cotton felt fibers.

  • Provides depth filtration with high dirt-holding capacity.

  • Eco-friendly and biodegradable material option.

  • Available in a wide range of micron ratings (5–200 µm).

  • Good for oils, syrups, and non-aggressive liquids.

  • Compatible with standard filter bag housings.

  • Sewn or welded seam options to minimize bypass.

  • Standard Sizes:

    • Size #1: Ø7” x 16” length

    • Size #2: Ø7” x 32” length

    • Size #3: Ø4” x 8” length

    • Size #4: Ø4” x 14” length

  • Custom Sizes: Available on request.

  • Top Sealing Options:

    • Stainless steel ring (SS 304/316)

    • Galvanized steel ring

    • Molded polypropylene flange/ring

    • Cotton/polyester stitched collar

  • Seam Construction: Sewn or welded (application dependent).

  • Material of Construction (MOC): 100% Cotton Felt

  • Micron Rating (Nominal): 5 – 200 µm

  • Operating Temperature: Up to 90°C continuous service

  • pH Range: 6 – 9 (limited chemical resistance)

  • Maximum Differential Pressure: 2.5 bar (36 psi) recommended

  • Efficiency: 60–90% (nominal)

  • Construction: Single-layer, depth filtration

  • Clarification of edible oils, syrups, and juices

  • Filtration of textile dyes and processing liquids

  • Pre-filtration in pharmaceutical and agricultural applications

  • Coolants, lubricants, and general water filtration

  • Eco-friendly liquid filtration projects where biodegradability is important