This article focuses on the 25 micron high flow filter cartridge, a coarse filtration grade widely used as the first-stage pre-filter for industrial ultrafiltration systems. A liquid filter adopting pleated polypropylene media, it delivers maximum throughput and excellent dirt holding capacity to remove large contaminants before UF membrane units. Our 25 micron high flow filter cartridge can replace High Flow Pleated Liquid Filter Cartridge HFU660UY060J for UF, commonly applied for raw water pre-treatment, power plant condensate filtration and industrial wastewater reuse. The 25μm filter efficiently traps coarse sand, large suspended solids and organic debris, lowering the contaminant load to protect downstream fine filters and ultrafiltration membranes.
25 Micron High Flow Filter Cartridge for Ultrafiltration Pre-treatment
This article focuses on the 25 micron high flow filter cartridge, a coarse filtration grade widely used as the first-stage pre-filter for industrial ultrafiltration systems. A liquid filter adopting pleated polypropylene media, it delivers maximum throughput and excellent dirt holding capacity to remove large contaminants before UF membrane units. Our 25 micron high flow filter cartridge can replace High Flow Pleated Liquid Filter Cartridge HFU660UY060J for UF, commonly applied for raw water pre-treatment, power plant condensate filtration and industrial wastewater reuse. The 25μm filter efficiently traps coarse sand, large suspended solids and organic debris, lowering the contaminant load to protect downstream fine filters and ultrafiltration membranes.
The 25 micron high flow filter cartridge is a pleated high-flow filter element designed for primary pretreatment of industrial ultrafiltration equipment. Among all high flow filter grades, 25 micron belongs to the coarsest category, specially engineered to capture large-size solid impurities. It boasts ultra-high single-element flow rate and outstanding dirt holding capacity with minimal pressure drop, ideal for raw water with high concentration of coarse sediment. Compared with 10μm,5μm and 1μm high flow filter cartridges, 25 micron filters are deployed at the very front of multi-stage pretreatment trains to bear the bulk of particle pollution and reduce the burden on subsequent fine filters. It uses outer-to-inner radial flow design, available in 20”,40”,60” lengths and fits standard high flow filter housings for small UF skids and large industrial water treatment plants.
This filter cartridge is fully interchangeable with Big Flow Rate Filter Cartridge for Ultrafiltration Pretreatment, and matches the sealing and connection specifications of High Flow Liquid Filter for Industrial Ultrafiltration Systems. Installed upstream of ultrafiltration membrane racks, the 25 micron high flow filter cartridge removes coarse sand, large rust flakes, big organic fragments and heavy suspended solids from incoming raw water. Without this primary barrier, massive coarse particles will rapidly scratch and block ultrafiltration membranes, resulting in sharp flux decline and frequent chemical cleaning cycles. Severe particle fouling may cause irreversible damage to expensive UF membrane modules. When your project requires multi-stage graded filtration for ultrafiltration pretreatment, Pleated High Flow Filter for Industrial Ultrafiltration Systems is a reliable alternative filter series for selection.
The 25 micron high flow filter cartridge adopts reinforced polypropylene inner core and outer support cage, which can withstand fluctuating differential pressure under continuous long-time operation. Gradient pleated polypropylene media maintains stable 25 micron filtration efficiency while keeping initial pressure drop low. The gradient structure distributes trapped contaminants evenly inside the filter media instead of surface clogging only. Optional gaskets include EPDM, silicone and Viton, to adapt to different liquid temperature and chemical compatibility demands. Thanks to its coarse 25μm rating, this filter cartridge achieves the highest flow rate and longest service cycle within the high flow filter range, cutting filter replacement frequency and lowering OPEX of your ultrafiltration pretreatment system.
The 25 micron high flow filter cartridge works based on pleated depth filtration principle, combining surface screening and deep adsorption interception. Raw water flows radially from the outer pleated surface of the filter cartridge, passes through multi-layer graded polypropylene media, purified liquid flows inward through the central inner core and exits from the end port of the filter element.
Large contaminants like sand grains, rust chunks and large organic debris are trapped on the outer pleated layer. All solid particles larger than 25 micron are captured inside the gradient filter layers. The gradient density design makes pollutants distribute evenly inside filter media rather than accumulating only on the outermost surface. This characteristic maximizes dirt holding capacity and extends filter service cycle, preventing rapid pressure rise after short running time.
Within the full ultrafiltration pretreatment workflow, the 25 micron high flow filter cartridge serves as the first protective barrier before secondary fine filters and UF membranes. It removes most coarse suspended solids and greatly reduces the total pollutant load for downstream filtration equipment. When inlet and outlet differential pressure reaches the preset threshold, filter cartridge replacement is required. The high-flow feature reduces the total number of filter cartridges required, simplifying spare part inventory management and on-site filter replacement work for maintenance teams.
| Item | Specification |
|---|---|
| Product Name | 25 Micron High Flow Filter Cartridge |
| Filter Media | Pleated Gradient Polypropylene |
| Core & Support Cage | Reinforced Polypropylene |
| Filtration Rating | 25 micron |
| Available Length | 20 inch /40 inch /60 inch |
| Outer Diameter | 4.5 inch (standard high flow size) |
| Max Operating Temperature | 82℃ |
| Max Differential Pressure | 3.4 bar at 20℃ |
| Optional Gasket | EPDM, Silicone, Viton |
| Single Cartridge Flow | Up to 100 m³/h (60” length, clean water) |
| Application | Ultrafiltration prefiltration, RO prefiltration, condensate polishing |
| Compatible Medium | Raw water, seawater, brackish water, weak acid & weak alkali liquid |
All parameters are tested under standard laboratory environments. Actual flow rate and dirt holding capacity will be affected by raw water turbidity, liquid temperature and impurity concentration. Our engineering team can customize end cap connection and gasket material according to your on-site ultrafiltration project requirements.
All 25 micron high flow filter cartridge products are manufactured under ISO9001 quality management system. Raw filter media will be strictly inspected before production to check pinholes, uneven thickness and material defects. Every finished filter cartridge will go through bubble point integrity test, particle retention efficiency test, pressure resistance test and full visual inspection before shipment.
Automated pleating equipment ensures consistent pleat density for each filter element, guaranteeing stable 25μm filtration efficiency and dirt holding capacity. Reinforced inner core prevents media collapse under variable operating pressure, which is a common failure mode of low-cost filter cartridges. All filter cartridges are cleaned and packed in dust-free workshop to avoid secondary contamination before delivery.
We provide batch inspection reports for each order. Third-party material testing can be arranged upon customer request. Our replacement filter elements deliver stable filtration performance, with good cost performance. Our products are fully tested to prevent media shedding, which is essential to avoid secondary contamination to ultrafiltration membrane modules.
This is the core application. The 5 micron high flow filter cartridge works as the standard security filter before ultrafiltration membrane racks for most pure water and water reuse projects. It removes particles and large colloids, stabilizes inlet SDI value, protects UF membranes and reduces chemical cleaning frequency.
Power plants widely adopt this 5 micron high flow filter cartridge for condensate polishing systems, removing iron oxide particles and suspended impurities to protect boilers and downstream ultrafiltration and RO membrane equipment.
For chemical, food and beverage wastewater recycling projects, it acts as pre-filter for ultrafiltration systems, lowering particulate pollutant load and improving system water recovery rate.
In desalination plants, this filter cartridge intercepts silt, algae fragments and suspended solids, protecting ultrafiltration and reverse osmosis membranes in the pretreatment skid.
Municipal water plants use the 5 micron high flow filter cartridge in UF drinking water purification process, removing suspended impurities in river or lake raw water to extend ultrafiltration membrane service life.
A: It acts as the first-stage pre-filter for ultrafiltration systems. It intercepts coarse particles larger than 25 micron, reduces the total solid load of incoming water, protects downstream fine filters and ultrafiltration membranes from large particle abrasion, and stabilizes the whole pretreatment system.
A: The 25μm version provides the highest flow rate and largest dirt holding capacity, suitable for raw water with massive coarse sand and debris. The 10μm filter can trap finer particles and colloids, used as secondary protection after 25μm filters for ultrafiltration systems with stricter water quality requirements.
A: Yes. It is widely used for primary condensate polishing. The 25 micron rating can efficiently remove large iron oxide particles and suspended contaminants in condensate water, protecting downstream ultrafiltration and reverse osmosis equipment.
A: Choose 25μm when raw water carries plenty of coarse sand and large debris. It is usually the first step of multi-stage graded pretreatment before ultrafiltration. Our technical team can provide professional recommendations after reviewing your water quality report.
A: Replacement cycle depends on raw water impurity load. Normally, replace the cartridge when inlet-outlet differential pressure reaches 2.5 bar. It has the longest service cycle among 1/5/10/25 micron high flow filters under the same raw water condition.
A: Yes. We support custom end cap connection styles and multiple gasket materials including EPDM, silicone and Viton to fit your existing filter housing and working medium.
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