High-Efficiency Pleated Filter Element | Durable & Long-Lasting

At Ansheng Filters, we primarily utilize grade 304, 316, and 316L stainless steel woven wire mesh for Pleated Filter Elements. Selection depends on application requirements: 304 offers excellent corrosion resistance for most applications, while 316L provides superior chloride resistance crucial for marine and chemical processing environments. Specialty alloys like Inconel and Hastelloy are available for extreme temperature and corrosion scenarios.

Pleat configuration directly impacts flow dynamics and particle retention efficiency. Optimal pleat depth ranges from 12-30mm, providing 10-15 times more filtration surface area compared to flat-screen designs of equivalent dimensions. Our advanced R&D department has established the Goldilocks Zone™ pleat configuration with a density of 40-60 pleats per inch for maximum efficiency-to-resistance ratio. This design achieves uniform flow distribution to each pleat valley, preventing premature clogging while maintaining high flow rates.

Pleated filter elements must comply with multiple international standards depending on application. At Ansheng Filters, our manufacturing processes are certified to ISO 9001:2015 and our products meet ASME BPE (Bioprocessing Equipment), EN 1822 (HEPA classification), and 3-A Sanitary Standards for food-grade applications. For critical process industries, we comply with the API RP 14E design guidelines for offshore filtration systems.

The maximum recommended initial differential pressure (ΔP) for stainless steel pleated filters is 1-2 psid per 10-inch element, increasing to 5-7 psid at terminal pressure. Flow rates typically range from 50 to 300 GPM (gallons per minute) depending on element diameter and filtration rating. Our laboratory testing shows a logarithmic relationship where flow reduction follows a predictable curve as contaminant loading increases. This predictable performance enables accurate system design and maintenance scheduling.

Micron rating validation requires multipoint testing according to ISO 16889 standards. At our facility, each production batch undergoes bubble-point and multi-pass tests on certified equipment. Advanced verification includes particle counting via laser diffraction spectrometry and scanning electron microscopy for critical applications. For instance, our N5 certified elements (5-micron rating) are tested with Arizona test dust particles at both ingress and egress ports to verify retention efficiency exceeding 99.99% at rated micron level.

Stainless steel pleated filters are designed for multiple cleaning cycles using methods appropriate to contaminant type. Standard cleaning protocols include: 1) Ultrasonic bath cleaning for organic residues using alkaline solutions below pH 11, 2) Back-pulsing with air or nitrogen at pressures below 90% of design rating, and 3) Soak cleaning using specialized solvents for oil-based contaminants. All cleaning methods should maintain fluid temperatures below 80°C to preserve membrane integrity. Ansheng provides application-specific cleaning protocols for each element we manufacture.

Proper installation is critical for Pleated Filter Elements performance. ANSI B93.19 standards specify installation torque limits for sealing surfaces. Over-compression can deform pleats and cause bypass while insufficient compression risks flow channeling around seals. Direction of flow must align with element labeling as reverse flow can damage pleat structure. For pressurized systems above 100 psi, we recommend our DualSeal™ technology which uses tandem sealing surfaces to prevent bypass even under pressure cycling conditions.