RO Membrane Pre-Filtration Manufacturer for Ultrafiltration Systems
As a professional RO Membrane Pre-Filtration manufacturer, we supply reliable pre-filter consumables for industrial membrane water treatment projects globally. This liquid filter effectively reduces SDI value of raw water and intercepts suspended particles to protect ultrafiltration and reverse osmosis membranes. Our HFU640UY045JUW high flow filter cartridge is our flagship product for RO prefiltration, matched with seawater reverse osmosis element to stabilize the whole membrane water treatment system. We customize pleated high flow filter cartridges for different raw water conditions, with strict quality control to guarantee long service life and low operation cost for seawater desalination, power plant, chemical and municipal water treatment clients.
Product Introduction
As an experienced RO Membrane Pre-Filtration manufacturer, we produce high-capacity pleated filter cartridges used as the primary pretreatment barrier for ultrafiltration and reverse osmosis equipment. Traditional small-bore filter cartridges require dozens of units to handle large water flow, which increases filter housing size, installation labor and maintenance workload. Our high flow filter cartridges adopt pleated filter media design, greatly expanding the effective filtration area of each single element. It can deliver large liquid throughput while maintaining low differential pressure, cutting the total quantity of filter cartridges required in the system and saving investment and operation costs for RO and ultrafiltration projects. Our High-Flow Pod Filter is our classic product series specially designed for RO membrane pre-filtration.
In a complete membrane water treatment workflow, raw water contains sediment, algae, suspended solids, colloids and large organic contaminants. Without qualified RO membrane pre-filtration, these impurities will scratch, block and foul ultrafiltration and RO membrane surfaces, resulting in irreversible membrane damage, frequent chemical cleaning and greatly shortened membrane service cycle. The products from our RO Membrane Pre-Filtration manufacturer intercept these large pollutants in advance. For raw water with high turbidity, we also provide Glass Fiber Filter Cartridge as secondary filtration consumables, further reducing feed water SDI and stabilizing the running status of ultrafiltration and RO systems.
We offer a full portfolio of pre-filtration cartridges with different filter media materials, including polypropylene, glass fiber and composite pleated materials. Multiple end cap styles and sealing options can fit most standard filter housings in the market. Our RO prefiltration filters can also serve as replacement elements for mainstream filter brands, such as our Pall Ultipleat High Flow Element replacement series. Whether customers need filter cartridges for small skid-mounted ultrafiltration & RO units or large centralized industrial desalination plants, our RO Membrane Pre-Filtration manufacturer can customize filtration precision, cartridge dimension and sealing structure to satisfy different flow and water quality requirements.

Working Principle
The working principle of our RO membrane pre-filtration cartridges combines surface filtration and depth filtration by using pleated filter media. Raw water flows into the filter housing and enters the outer layer of the high flow filter cartridge. As liquid passes through multi-layer folded filter media, solid particles, colloids and organic impurities are trapped on the filter surface and inside the internal pore structure of filter media. The purified water flows into the inner core of the cartridge and flows out towards the downstream ultrafiltration and RO membrane modules.
The pleated structure is the core advantage of the filter cartridges produced by our RO Membrane Pre-Filtration manufacturer. By folding flat filter media into dense pleats, the usable filtration area increases dramatically compared with ordinary non-pleated cartridges of the same length. Larger filtration area supports higher liquid flow rate and slows pressure difference build-up during continuous running, which is why high flow pleated cartridges are widely adopted for RO membrane pre-filtration.
The standard water treatment sequence is raw water intake → RO membrane pre-filtration → ultrafiltration membrane separation → reverse osmosis membrane treatment. Pre-filtration removes large contaminants in advance, so only tiny micro-particles can reach the ultrafiltration membrane. Our Replace Pall Water Filter Element uses the identical pleated high flow filtration principle. Operators monitor inlet and outlet pressure difference. When differential pressure rises to the preset threshold, the filter cartridge needs replacement to restore filtration capacity and protect downstream ultrafiltration and RO membranes.
Technical Parameters
| Item | Specification |
|---|
| Filter Media | Polypropylene / Glass Fiber / Composite pleated media |
| Filtration Rating | 1μm, 5μm,10μm,20μm,50μm |
| Single Cartridge Flow | Up to 110 m³/h under rated operating condition |
| Max Operating Pressure | 10 bar |
| Operating Temperature | 0~80℃ (depends on filter media) |
| Sealing Material | EPDM, Silicone, FKM |
| Standard Length | 40 inch, 60 inch |
| End Cap Type | Single open / double open, standard industry connector |
| Liquid Compatibility | Industrial raw water, weak acid, weak alkali aqueous solution |
The selection of RO membrane pre-filtration cartridges depends on raw water quality and system design. Higher filtration precision will reduce the maximum flow rate, so we balance flow capacity and particle retention efficiency for every project. Our Equivalent Pall Filter HFU660GF060H13 follows the same technical specifications and can directly replace original filter elements without modifying existing filter housings.
Quality Control
As a professional RO Membrane Pre-Filtration manufacturer, we implement strict multi-stage quality inspection throughout the whole manufacturing process. Raw filter media will be tested for bubble point, tensile strength and chemical compatibility before pleating and assembly. After folding, thermal welding and end cap bonding, every finished high flow filter will undergo bubble point leak detection individually, to check for pinholes, media damage and sealing defects.
We produce products in accordance with ISO industrial filtration standards. Material certificates, batch inspection reports and bubble point test records can be provided for project bidding, factory audit and customer verification. Accelerated fouling simulation tests are carried out in our factory to verify long-term stability of our RO membrane pre-filtration cartridges under real industrial operating conditions.
Our professional technical team offers full lifecycle technical support, including system flow calculation, filter housing selection, installation guidance and maintenance training for pre-filtration cartridges, ultrafiltration and RO systems. We also provide after-sales consultation on cartridge replacement, pressure difference monitoring and membrane fouling prevention solutions.

Application Fields
Products from our RO Membrane Pre-Filtration manufacturer are widely used as pretreatment filters before ultrafiltration and RO equipment across multiple industries.
Seawater Desalination Industry
Our RO pre-filtration cartridges remove sediment, algae and suspended solids from raw seawater, protecting ultrafiltration and seawater reverse osmosis membrane elements. Widely used for island water supply and coastal large desalination stations.
Power Plant Water Treatment
Thermal power plants install our RO membrane pre-filtration cartridges before ultrafiltration units to produce boiler make-up water, reduce impurity load and extend ultrafiltration and RO membrane service life.
Chemical Industrial Liquid Purification
Chemical plants use our RO pre-filtration cartridges to filter process water and cleaning liquid, intercepting solid particles to protect downstream ultrafiltration and reverse osmosis membrane separation equipment.
Food & Beverage Water Treatment
Food and beverage factories adopt our RO pre-filtration cartridges + ultrafiltration + RO system for raw water purification, meeting sanitary water standards for beverage and food production.
Mining Wastewater Recycling
Mining sites use our RO membrane pre-filtration cartridges as pretreatment for mine wastewater, cooperating with ultrafiltration and RO equipment to realize wastewater recycling and water resource reuse.
Municipal Water Treatment Projects
Large municipal water plants deploy our RO pre-filtration cartridges in ultrafiltration and RO systems for tap water upgrading and water purification.
FAQ
Q1: What does an RO Membrane Pre-Filtration manufacturer supply?
A: We supply high flow pleated filter cartridges as the pre-treatment consumables for ultrafiltration and reverse osmosis systems. These filters remove particles and reduce feed water SDI value to protect membrane elements.
Q2: Why is RO membrane pre-filtration essential for ultrafiltration and RO systems?
A: Raw water contains sediment, colloids and suspended particles. RO pre-filtration traps these contaminants in advance, preventing membrane fouling and physical scratch damage to ultrafiltration and RO membranes, cutting maintenance costs.
Q3: What filter media options are available for RO membrane pre-filtration cartridges?
A: Main media choices include polypropylene, glass fiber and composite pleated media. PP media suits general water treatment; glass fiber works well for high-temperature liquid and fine particle filtration.
Q4: How to judge the replacement time of RO membrane pre-filtration filter cartridges?
A: Monitor pressure difference between filter inlet and outlet. When differential pressure rises to the preset limit, the filter cartridge is clogged and needs replacement to restore filtration performance.
Q5: Can your RO membrane pre-filtration cartridges be customized?
A: Yes. We support customized filtration rating, sealing material, cartridge length and end cap structure to match different ultrafiltration and RO systems and liquid working environments.
Q6: Are your RO pre-filtration filter cartridges compatible with mainstream filter housings?
A: Yes. Our filter cartridges can replace mainstream brand high flow filter elements including Pall series elements, and no housing modification is required.
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