This page focuses on the 40 inch high flow filter cartridge, the mainstream pre-filter element for large-scale ultrafiltration water treatment systems. A liquid filter constructed with deep pleated polypropylene media, it efficiently removes suspended solids, colloids and particulate contaminants to safeguard downstream UF membrane modules. Our 40 inch high flow filter cartridge can replace Equivalent ALN01-60B High Flow Cartridge for Ultrafiltration, widely used in seawater desalination, industrial wastewater reuse and power plant condensate polishing projects. With high dirt holding capacity and large single-element throughput, it cuts down the quantity of filter housings and reduces maintenance frequency for full-scale water treatment plants.
40 Inch High Flow Filter Cartridge for Ultrafiltration Pre-treatment
This page focuses on the 40 inch high flow filter cartridge, the mainstream pre-filter element for large-scale ultrafiltration water treatment systems. A liquid filter constructed with deep pleated polypropylene media, it efficiently removes suspended solids, colloids and particulate contaminants to safeguard downstream UF membrane modules. Our 40 inch high flow filter cartridge can replace Equivalent ALN01-60B High Flow Cartridge for Ultrafiltration, widely used in seawater desalination, industrial wastewater reuse and power plant condensate polishing projects. With high dirt holding capacity and large single-element throughput, it cuts down the quantity of filter housings and reduces maintenance frequency for full-scale water treatment plants.
The 40 inch high flow filter cartridge is a pleated industrial filter element specially engineered for large-capacity ultrafiltration pretreatment systems. As the most widely adopted specification among high flow filter series, it balances footprint, single-cartridge flow and contaminant holding capacity perfectly. Compared with 20-inch compact models and extra-long 60-inch variants, the 40 inch high flow filter cartridge is the standard choice for most medium-to-large UF water treatment skids, delivering outstanding filtration performance without requiring oversized filter vessels.
This filter cartridge is fully interchangeable with Ultipleat High Flow Filters for Ultrafiltration Pre-treatment, and compatible with the structure and sealing standards of Pre-filtration Filter Cartridge for Industrial Ultrafiltration Systems. Installed right before ultrafiltration membrane racks, the 40 inch high flow filter cartridge intercepts sediment, rust particles, algae, fine silt and organic fragments contained in raw inlet water. Without effective prefiltration protection, solid impurities will scratch the UF membrane surface, block membrane pores and lead to irreversible membrane fouling. Serious fouling will continuously lower membrane permeate flux, increase chemical cleaning cycles and shorten the service lifespan of expensive ultrafiltration membrane elements. For projects that demand larger treatment capacity, customers can also refer to 60" PP High Flow Water Filter for Ultrafiltration Pre-treatment as an upgraded alternative solution.
The 40 inch high flow filter cartridge features a reinforced polypropylene inner core and outer support cage, which can endure fluctuating differential pressure under long-term continuous running conditions. Gradient-density polypropylene pleated filter media provides high dirt holding capacity while maintaining low initial pressure drop. Multiple micron grades from 1μm up to 100μm are available to adapt to different raw water turbidity and impurity characteristics. EPDM, silicone and Viton sealing gaskets are optional to fit different liquid temperature and chemical compatibility requirements. It has become the standard security pre-filter for ultrafiltration systems in many industrial water treatment sectors.
The 40 inch high flow filter cartridge operates on the pleated depth filtration principle, combining surface sieve effect and deep adsorption interception. Raw water flows radially from the outer pleated surface of the filter cartridge, penetrates the 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 such as sand grains, rust debris and plankton are trapped on the outer pleated layer. Fine colloids and tiny suspended particles are captured inside the gradient filter layers. The gradient density design allows pollutants to distribute evenly inside the filter media instead of accumulating only on the outermost surface. This special design maximizes dirt holding capacity and extends filter service cycle, avoiding rapid pressure rise after a short operation time.
In the complete ultrafiltration pretreatment workflow, the 40 inch high flow filter cartridge serves as the critical protective barrier for ultrafiltration membranes. It stabilizes the Silt Density Index (SDI) of inlet water and reduces the particulate load entering UF membrane modules. When the differential pressure between inlet and outlet reaches the preset threshold, the filter cartridge needs to be replaced. The standardized 40-inch length makes procurement, stocking and cartridge replacement much easier for engineering and maintenance teams.
| Item | Specification |
|---|---|
| Product Name | 40 Inch High Flow Filter Cartridge |
| Filter Media | Pleated Polypropylene |
| Core & Support Cage | Reinforced Polypropylene |
| Standard Length | 40 inch |
| Micron Rating | 1μm,5μm,10μm,20μm,40μm,70μm,100μm |
| Max Operating Temperature | 82℃ |
| Max Differential Pressure | 3.4 bar at 20℃ |
| Optional Gasket | EPDM, Silicone, Viton |
| Single Cartridge Flow | Up to 70 m³/h (5μm, clean water) |
| Application | Ultrafiltration prefiltration, RO prefiltration, industrial liquid filtration |
| 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 micron rating, end cap connection and gasket material according to your on-site ultrafiltration project requirements.
All 40 inch 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, pressure resistance test and full visual inspection before shipment.
Automated pleating equipment ensures consistent pleat density for each filter element, guaranteeing stable flow performance 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 equivalent filtration performance as famous brand cartridges, with better overall 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 40 inch high flow filter cartridge acts as the security filter before ultrafiltration membrane racks in municipal water treatment and large industrial water reuse projects. It removes particles and colloids, stabilizes inlet SDI, protects UF membranes and reduces chemical cleaning frequency.
For chemical, petrochemical, food and beverage wastewater recycling projects, it works as the pre-filter for ultrafiltration systems, lowering pollutant load and improving system water recovery rate.
In medium and large desalination plants, this filter cartridge filters raw seawater, intercepts sea sand, algae and suspended solids, to protect ultrafiltration and reverse osmosis membranes in the pretreatment skid.
Power plants use the 40 inch high flow filter cartridge for condensate polishing in auxiliary systems, removing iron oxide and particulate impurities, protecting boiler and downstream membrane equipment.
Municipal water plants adopt this filter cartridge in UF water purification process, removing suspended impurities in raw river or lake water to extend ultrafiltration membrane service life.
A: It works as the key security pre-filter for ultrafiltration systems. It intercepts suspended particles, silt and colloids, reduces SDI value of incoming water, prevents fouling and mechanical scratch damage to ultrafiltration membranes, and extends the service life of UF modules.
A: It adopts deep pleated structure with much higher single-element flow rate and larger dirt holding capacity. For the same water throughput, fewer filter cartridges and filter housings are required, saving equipment investment and maintenance labor cost.
A: Yes. Polypropylene media has good salt tolerance. We can select matched sealing gaskets according to your seawater salinity and temperature. You can send your water quality report for our professional compatibility assessment.
A: 5μm or 10μm are the most popular options for ultrafiltration pretreatment. If raw water contains a large amount of coarse sediment, 20μm or 40μm is recommended. Our technical team will provide customized suggestions based on your water test data.
A: Replacement cycle depends on raw water impurity load. Normally, replace the cartridge when the inlet-outlet differential pressure reaches 2.5 bar. In general industrial water projects, its service life ranges from 1 to 3 months.
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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