Large Diameter Pleated Filter Cartridge: Optimized High‑Capacity Consumable for Industrial Liquid Filtration

For Middle‑East EPC contractors, plant operators and water‑treatment system integrators, handling massive liquid flow while controlling equipment footprint and maintenance cost is always a core challenge. Traditional 2.5‑inch small‑size pleated or melt‑blown cartridges require dozens of elements to achieve target flow rate, resulting in bulky filter vessels, heavy replacement labor and frequent system shutdown risks.

Large Diameter Pleated Filter Cartridge, featured with 152 mm large outer diameter, solves these industry pain points perfectly. It maximizes effective filtration area through dense pleat layout, realizing high single‑element throughput and long service intervals. As a key consumable for modern industrial water filter systems, it is widely deployed as security pre‑filtration upstream of RO, UF and precision process equipment. Interchangeable aftermarket cartridges match original dimensional and performance standards, helping local industrial projects shorten spare‑part lead‑time and reduce total procurement expenditure.

Working Principle

Large Diameter Pleated Filter Cartridge mainly adopts outside‑in flow pattern. Raw liquid flows through outer pleated media surface, contaminants are trapped step‑by‑step by multi‑layer gradient filter media. Larger sediment, rust and suspended particles are captured on outer pleat layers; fine colloids and tiny solid impurities are intercepted by inner dense media layers.

Gradient pore structure avoids rapid surface blinding and maximizes dirt‑holding capacity. All end‑caps, media and support layers are thermally welded without glue, eliminating fluid bypass and secondary contamination caused by adhesive dissolution. With contaminants continuously accumulated, inlet‑outlet differential pressure rises gradually. Operators shall replace cartridges once differential pressure reaches recommended value to restore system throughput and filtration efficiency. It protects expensive downstream membranes, heat exchangers and precision process devices from particle abrasion and fouling.

Key Technical Specifications

Construction Materials

Filter Media：Polypropylene(PP), Glass Fiber(GF), PTFE, PES for option

Support / Drainage Layer：Polypropylene

End‑caps：Glass‑fiber reinforced polypropylene

Center Core：Polypropylene

Sealing Gasket：EPDM, Buna‑N, Viton(FKM), Silicone

Assembly：Full thermal‑bond welding, no adhesive

Dimension Parameters

Outer Diameter：152 mm (6 inch)

Available Length：20 inch, 40 inch, 60 inch

Installation Style：Single open‑end with flange / double open‑end, compatible with mainstream high‑flow filter housings

Flow Direction：Outside‑in

Performance Parameters

Micron Rating：1 μm,3 μm,5 μm,10 μm,20 μm,40 μm,70 μm,100 μm

Maximum Operating Temperature：80 ℃ (PP media); 121 ℃ (glass‑fiber media)

Max Allowable Differential Pressure：3.4 bar @20 ℃

Recommended Replacement Differential Pressure：2.0‑2.4 bar

Single‑cartridge Flow (water base):

20 inch: up to 40 m³/h

40 inch: up to 75 m³/h

60 inch: up to 110 m³/h

Effective Filtration Area：7‑10.5 ㎡ for 60‑inch cartridge

Core Product Advantages

Ultra‑large filtration area for high single‑element throughput 6‑inch large‑diameter pleated design greatly expands effective filtration area. One large diameter pleated filter cartridge can replace 8‑12 pieces of standard 2.5‑inch cartridges. It reduces total element quantity, shrinks filter housing dimension and lowers initial investment for skid‑mounted water‑treatment trains.

Excellent dirt‑holding capacity for extended service cycles Multi‑layer gradient media realizes depth‑type contaminant capture, delaying pressure‑drop rising speed. Longer service intervals reduce cartridge consumption, shutdown frequency and on‑site labor cost for 24‑hour continuous‑run industrial plants.

Zero‑glue thermal‑bond construction avoids secondary pollution No adhesive is applied in whole assembly process, preventing glue dissolution and fluid bypass risk. Stable sealing performance guarantees consistent filtration efficiency even under flow fluctuation. Multiple gasket selections adapt diverse chemical medium conditions.

Flexible media and precision selection for complex working‑conditions Multiple optional filter media including PP, glass fiber and PTFE can match aqueous water, weak acid‑alkali fluid, high‑viscosity liquid and corrosive chemical solution. Rich micron grades cover coarse pre‑filtration to absolute‑rated security protection requirements.

Good interchangeability and easy maintenance Standard dimension and interface support drop‑in replacement for imported brand housings such as Pall, 3M and Marksman series. Cartridge with lifting handle allows fast installation and removal without special tools, simplifying daily maintenance work.

Typical Application Fields

Water Treatment & Desalination Industry Security pre‑filtration for seawater and brackish‑water RO system; raw‑water pre‑treatment for industrial park and municipal water supply; removal of sand, silt and suspended solids to mitigate membrane fouling risk.

Power Generation Industry Boiler feed‑water pre‑filtration; circulating cooling‑water purification; protection for heat exchanger and high‑pressure auxiliary equipment in thermal‑power and combined‑cycle power plants.

Chemical & Petrochemical Industry Purification of circulating process liquid, amine liquid, glycol solution and recycled wastewater; solid particle removal for chemical feeding stream to safeguard catalyst and reaction devices.

Food & Beverage Industry Raw‑water pre‑treatment, sugar‑liquid filtration and beverage process‑liquid purification; granular impurity removal to stabilize product quality and shelf‑life.

Electronics & General Industrial Field Pre‑filtration for ultra‑water and EDI system; coolant and cleaning liquid filtration for manufacturing workshop; pre‑treatment of coating and printing liquid.

Related Industrial Filter Products

3M 7000 Series High Flow Filter Cartridge

HFU640UY700H13W Pall High Flow Filter Element

3M Filter HF40PP002A01 Industrial High Flow Filter

Parker MFNP005‑40N Industrial Precision Filter Cartridge

FAQ

Q1: What is the difference between large diameter pleated filter cartridge and standard‑size filter cartridge?

A: Large‑diameter 6‑inch structure owns much bigger filtration area and higher single‑cartridge flow. It uses fewer cartridges to reach same system flow rate, saving housing investment and cutting maintenance workload. Standard‑size cartridges are more suitable for small‑and‑medium flow systems.

Q2: Can large diameter pleated filter cartridge work for corrosive chemical liquid?

A: PP media fits most weak acid‑alkali aqueous fluid. For strong corrosive solvent, select PTFE media together with Viton gaskets. Confirm medium compatibility before project configuration.

Q3: How to choose proper micron rating for RO pre‑filtration?

A: 5‑10 μm grade is widely adopted for RO security filtration. 20‑40 μm for high‑turbidity raw‑water coarse pre‑treatment. Final selection shall combine local raw‑water turbidity and particle‑size test report.

Q4: When shall we replace large diameter pleated filter cartridge?

A: Replace cartridge when system differential pressure reaches 2.0‑2.4 bar. Do not operate beyond maximum differential pressure, in case of media damage and particle breakthrough.

Q5: Can you supply customized large diameter pleated filter cartridge for Middle‑East large‑scale projects?

A: Yes. We support customized media material, micron rating, cartridge length and gasket type. Batch test reports, bulk‑order quotation and project‑oriented technical support are available for industrial purchasers.