20 Inch High Flow Filter Cartridge for Ultrafiltration Pre-treatment

20 Inch High Flow Filter Cartridge for Ultrafiltration Pre-treatment

This article introduces the 20 inch high flow filter cartridge, a compact pre-filtration solution for small and medium ultrafiltration water treatment systems. A liquid filter adopting deep pleated polypropylene media, it traps suspended solids and colloids to protect downstream UF membrane modules. Our 20 inch high flow filter cartridge can replace Replace Pall MCC1401E100H13 High Flow for Ultrafiltration, widely applied in seawater desalination, power plant condensate polishing and industrial water reuse projects. It fits existing filter housings easily and reduces replacement workload for limited-space water treatment plants.

1. Product Introduction

The 20 inch high flow filter cartridge is a compact pleated filter element specially designed for small and medium ultrafiltration water treatment systems. Compared with 40-inch and 60-inch high flow cartridges, this 20 inch high flow filter cartridge is significantly shorter, which makes it the preferred choice for skid-mounted equipment, containerized water treatment units and sites with limited installation space. Despite its compact size, the deep pleated structure still delivers a much higher flow rate per element than conventional standard filter cartridges, so fewer filter housings are needed to reach the target treatment capacity.

This filter cartridge is fully interchangeable with HFU640GF200H13 high flow filter cartridge, and matches the specifications of Pall Cartridge Filter for Industrial Liquid Pretreatment & Membrane Protection. Installed directly before ultrafiltration membrane skids, the 20 inch high flow filter cartridge captures sediment, algae, fine suspended particles and organic debris from raw feed water. Without reliable pre-filtration protection, solid particles will scratch UF membrane surfaces, block membrane pores and trigger irreversible membrane fouling. Severe fouling will gradually reduce permeate flux, increase chemical cleaning frequency and shorten the service life of expensive ultrafiltration membrane modules. For projects needing a more compact filtering footprint, customers can also select PFTM12UEPFB high flow filter cartridge as an alternative solution.

The 20 inch high flow filter cartridge adopts reinforced polypropylene inner core and outer support cage, which can withstand fluctuating differential pressure under continuous operating conditions. Gradient-density polypropylene pleated media delivers high dirt holding capacity while keeping a low pressure drop. Multiple micron grades ranging from 1μm to 100μm are available to adapt to different raw water quality. EPDM, silicone and Viton sealing gaskets are optional to meet varied liquid temperature and chemical medium requirements. It has become a practical pre-filter option for ultrafiltration systems in many industrial sectors.

2. Working Principle

The 20 inch high flow filter cartridge operates based on pleated depth filtration principle, combining surface screening and deep adsorption interception. Raw water flows radially from the outer surface of the pleated filter media, passes through multi-layer graded polypropylene material, and purified liquid flows inward into the central inner core and discharges out from the end port of the filter cartridge.

Large contaminants such as sand, rust and plankton are trapped on the outer pleated layer. Fine colloids and tiny suspended particles are captured inside the graded filter layers. The gradient density design allows pollutants to distribute evenly inside the filter media rather than accumulating only on the outer surface. This unique design maximizes dirt holding capacity and extends the filter service cycle, preventing rapid pressure rise within a short operation period.

In the ultrafiltration pretreatment workflow, the 20 inch high flow filter cartridge acts as the first protective barrier for ultrafiltration membranes. It controls the Silt Density Index (SDI) of inlet water and reduces particulate load entering UF membrane modules. When the differential pressure between inlet and outlet reaches the preset threshold, the filter cartridge needs replacement. The compact length of this filter also makes cartridge replacement easier and faster, minimizing downtime for continuous water treatment production.

3. Technical Parameters

All parameters are tested under standard laboratory conditions. Actual flow rate and dirt holding capacity will be affected by raw water turbidity, 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.

4. Quality Assurance

All 20 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. If you want to learn more about prefiltration filter technology, read The Significance of Equivalent High Flow Water Filter Elements. Our products are fully tested to prevent media shedding, which is essential to avoid secondary contamination to ultrafiltration membrane modules.

5. Application Fields

5.1 Small and Medium Ultrafiltration Pretreatment

This is the core application. The 20 inch high flow filter cartridge serves as the security filter before ultrafiltration membrane units in compact municipal water treatment and industrial water reuse projects. It removes particles and colloids, stabilizes inlet SDI, protects UF membranes and reduces chemical cleaning frequency.

5.2 Skid-Mounted and Containerized Water Systems

For containerized and skid-mounted water treatment equipment with limited filter vessel space, the compact 20 inch high flow filter cartridge is the ideal prefiltration choice, saving installation space while protecting ultrafiltration membranes.

5.3 Seawater & Brackish Water Desalination

In small 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.

5.4 Power Plant Condensate Water Treatment

Power plants use the 20 inch high flow filter cartridge for condensate polishing in auxiliary systems, removing iron oxide and particulate impurities, protecting boiler and downstream membrane equipment.

5.5 Industrial Wastewater Reuse

For chemical, food and beverage wastewater recycling projects, it works as the pre-filter for ultrafiltration systems, lowering pollutant load and improving water recovery rate.

6. FAQ (6 Questions)

Q1: What role does the 20 inch high flow filter cartridge play in ultrafiltration equipment?

A: It acts as the primary 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.

Q2: What advantages does the 20 inch high flow filter cartridge have over standard small filter cartridges?

A: It adopts a deep pleated design with a high single-element flow rate and large dirt holding capacity. For the same water throughput, fewer filter cartridges and filter housings are required. Its compact 20 inch length saves installation space and makes replacement easier in limited areas.

Q3: Can the 20 inch high flow filter cartridge run continuously in seawater desalination pretreatment?

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.

Q4: Which micron rating should I select for ultrafiltration prefiltration?

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.

Q5: When should I replace the 20 inch high flow filter cartridge?

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.

Q6: Can you customize the end cap and gasket of the 20 inch high flow filter cartridge for our existing filter housing?

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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