High Flow Filter Cartridge for Seawater Desalination and SWRO Pretreatment with 6-Inch Large Diameter Pleated Design

Pullner PHFL Series High Flow Filter Cartridges are specially designed for large-scale water treatment systems, particularly seawater desalination and seawater reverse osmosis (SWRO) pretreatment applications.

Featuring a 6-inch (152 mm) large-diameter structure and pleated filter media, the cartridge provides a large effective filtration area within a compact installation space. It effectively removes suspended solids, fine particles and other contaminants from feed water before the RO membrane stage, helping protect downstream membranes and maintain stable system operation.

The filter adopts an inside-to-outside flow direction, with an integrated support structure and thermally welded connections to ensure mechanical strength and reliable filtration performance.

Available in PP and other customized media configurations, Pullner high flow filter cartridges can be supplied in different lengths, micron ratings and end-cap configurations to meet specific desalination plant requirements.

Pullner high flow filter cartridges are widely used in industrial water treatment and large-scale desalination systems.

• Seawater Desalination: Pretreatment filtration for SWRO desalination plants.

• Reverse Osmosis Systems: Removal of suspended particles before RO membranes to reduce membrane fouling.

• Brackish Water Treatment: Fine particle filtration for industrial reverse osmosis systems.

• Power Generation: Filtration of supplementary water and condensate.

• Industrial Water Treatment: Process water purification and wastewater treatment.

• Petrochemical Industry: Filtration of process water, cooling water and compatible process fluids.

• Large Filtration Area: 6-inch large-diameter construction provides an increased effective filtration area and high flow capacity.

• High Dirt-Holding Capacity: Graded-depth filter media captures particles throughout the filtration structure, helping extend service life.

• Low Pressure Drop: Optimized pleated media structure provides efficient filtration with relatively low flow resistance.

• Inside-to-Outside Flow: Contaminants are retained inside the filter cartridge, reducing the risk of releasing captured particles during operation.

• High Mechanical Strength: Integrated support and reinforced outer cage help maintain structural stability under operating conditions.

• Thermal Welding Construction: Filter connections are thermally welded to provide reliable sealing and structural integrity.

• Easy Installation and Replacement: Single-open-end design simplifies installation and routine cartridge replacement.

• Customizable Configuration: Available in different lengths, micron ratings, filter media and sealing materials.

Performance parameters depend on the selected filter configuration and operating conditions.

Q1: What is a high flow filter cartridge used for in seawater desalination?

It is primarily installed in the pretreatment stage of seawater reverse osmosis systems. The cartridge removes suspended solids and fine particles from feed water before it enters the RO membranes, helping reduce membrane fouling and protect downstream equipment.

Q2: What is the difference between a standard filter cartridge and a high flow filter cartridge?

A high flow filter cartridge features a larger diameter and greater effective filtration area than conventional filter cartridges. This allows higher flow capacity per cartridge, reduces the number of cartridges required and simplifies filter housing installation and maintenance.

Q3: What micron ratings are available?

Different filtration ratings are available, including 1, 2, 5, 10, 15, 20, 30, 50, 70 and 100 μm. The appropriate rating should be selected according to feed water quality and the requirements of the RO system.

Q4: Can the filter cartridge be used for seawater RO pretreatment?

Yes. The PHFL series is designed for high-flow water treatment applications, including seawater desalination and SWRO pretreatment. The filter media and micron rating should be selected according to the seawater characteristics and system operating conditions.

Q5: What lengths are available?

Standard lengths include 20 inches, 40 inches and 60 inches. Customized dimensions and configurations can also be discussed.

Q6: Can Pullner provide matching filter housings?

Yes. Matching high flow filter housings can be supplied according to the required flow rate, operating pressure, connection type and installation requirements.

Q7: What information is required for a quotation?

Please provide the required filtration rating, flow rate, filter length, operating pressure, temperature, seawater quality and required quantity. Existing filter models, drawings or photographs are also helpful for product selection.

Shipping Information

Shanghai Pullner Filtration Technology Co., Ltd.

Established: 2013

Shanghai Pullner Filtration Technology Co., Ltd., established in 2013, is a professional manufacturer of filter cartridges and filtration solutions.

With a 15,000m² production facility, 20+ production lines, advanced testing laboratories, and experienced R&D teams, Pullner provides high-performance filtration products for Microelectronics, Biopharmaceuticals, Food & Beverage, Petrochemical, Water Treatment, Power Generation, and other industries.

Certified with ISO 9001, ISO 14001, and ISO 45001, Pullner is committed to delivering reliable and innovative filtration solutions to customers worldwide.

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