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| Quality control of raw materials: After laboratory tests, 13 indicators including fiber composition, breathability, breaking strength and elongation, heat shrinkage, moisture regain, oil content, and fiber melting point were measured. The test standards are superior to those of industry peers. | |||||||||
Also known as Industrial Liquid Filtration Socks and Chemical-Resistant Liquid Filter Cartridges, these precision-engineered filtration solutions address the critical need for contaminant removal in industrial fluid processing. Constructed from multi-layered synthetic media (polypropylene, polyester, or PTFE) with gradient pore structures, these liquid filter bags provide superior particle retention compared to conventional mesh filters—capturing particulates while maintaining optimal flow rates in high-volume applications.
Available in 1–100 micron filtration ratings (per ISO 4572), these bags are engineered to handle diverse liquid types, including aqueous solutions, petroleum-based fluids, and aggressive chemicals. Unlike disposable paper filters that degrade in 24–48 hours, these industrial-grade bags maintain structural integrity for 200–500 hours of continuous operation (depending on contaminant load), significantly reducing replacement frequency in critical processes like paint finishing and wastewater treatment.
• Particle Retention: Achieves 99.9% efficiency for rated particles (tested per ASTM F795), with absolute-rated options available for critical applications like pharmaceutical API production.
• Material Options:
◦ Polypropylene (PP): Resists acids (pH 2–12) and operates at -40°C to 80°C, ideal for chemical processing.
◦ Polyester (PET): Offers superior tensile strength (1800N/5cm) and temperature resistance up to 135°C, suitable for high-temperature liquids.
◦ PTFE: Withstands extreme chemicals (including 98% sulfuric acid) and temperatures up to 260°C, meeting FDA 21 CFR 177.1550 standards.
• Flow Characteristics: Low initial pressure drop (<0.2 bar at 100 L/min flow rate) minimizes pump energy consumption, with pressure drop increase limited to <0.5 bar over service life.
• Seam Design: Heat-sealed or ultrasonic-welded seams (no stitch holes) eliminate bypass, reducing particle leakage by 90% compared to stitched alternatives.
• Bag Sizes: Standard diameters (152mm, 203mm) and lengths (305mm–1220mm) with customizable options for non-standard filter housings.
• Retention Rings: Polypropylene, stainless steel (304/316), or PTFE rings ensure secure seating, compatible with all major filter housing manufacturers.
Liquid Filter Bags excel in industries requiring consistent fluid purity and process reliability:
• Chemical Manufacturing: Polishing of bulk chemicals (e.g., surfactants, solvents) to remove catalyst residues, reducing downstream equipment fouling by 65%.
• Automotive Paint Shops: Filtering paint booth recirculation fluids to capture overspray particles (>5μm), ensuring finish quality and reducing rework rates by 40%.
• Wastewater Treatment: Pre-treatment of industrial effluents (heavy metal removal) prior to discharge, helping facilities meet EPA 40 CFR Part 403 standards.
• Food and Beverage: Clarification of syrups, oils, and beverages (e.g., wine, juice) with FDA-compliant materials, achieving particle counts <10 particles/mL (≥5μm).
Compared to cartridge filters and disposable paper bags, these industrial liquid filter bags offer compelling benefits:
• Cost Efficiency: 30–50% lower per-unit cost than pleated cartridge filters, with 2–3 times longer service life than paper bags (0.15–0.30 per 1000 liters filtered).
• Easy Maintenance: Quick-change design reduces downtime during replacement (5 minutes per bag vs. 15 minutes for cartridges), ideal for 24/7 production lines.
• Environmental Impact: Reusable options (with proper cleaning) reduce waste by 70% compared to single-use alternatives, supporting sustainability initiatives.
• Process Compatibility: Wide chemical compatibility eliminates the need for material changes between product batches, reducing cross-contamination risks.
Our liquid filter bag customization ensures optimal performance for specific fluid conditions:
• Contaminant Analysis: Laboratory testing of fluid samples (via laser particle counting) to determine optimal micron rating and material selection—e.g., 5μm PTFE bags for abrasive slurries.
• Engineering Design: Custom dimensions (lengths up to 2000mm) and port configurations for retrofitting existing filter housings, with 3D CAD modeling for perfect fit.
• Surface Treatments: Optional hydrophilic or oleophobic coatings to enhance wettability or oil separation capabilities, extending service life by 25% in challenging fluids.
• Testing Protocol: Samples undergo 500-hour pressure cycling (0–1 bar) and chemical immersion testing, with filtration efficiency verified using ISO 11171 test dust.
• Quality Assurance: Each batch includes a certificate of performance, with 100% integrity testing via bubble point analysis (per ASTM F316) to ensure no bypass.
