Annie.chen@clearfilterpro.com +86 13538992575

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Industrial Pleated Filter Cartridges for Critical Filtration

When your process demands consistent fluid quality, standard filters often fall short. Our pleated cartridges are engineered to capture more contaminants and last longer, keeping your lines running smoothly.

High Dirt-Holding Capacity

The pleated design maximizes surface area, meaning fewer change-outs and less downtime for your operators.

Strict Absolute Ratings

Reliable particle removal so you know exactly what size of contaminant is being stopped before it ruins your downstream equipment.

Broad Chemical Resistance

Manufactured without glues or binders to

Premium Filtration Solutions

Industrial Pleated Filter Cartridges by Media Type

Engineered for absolute precision, high flow rates, and extended operational lifespan across diverse industrial applications.

Polypropylene (PP) Pleated Cartridges

The industry standard for general liquid processing. Constructed from 100% pure polypropylene with thermal bonded seams, offering broad chemical resistance and low extractables for water and standard chemical filtration.

PES & PTFE Membrane Cartridges

Engineered for absolute-rated microfiltration and strict sterile requirements. PES provides high flow rates for aqueous solutions, while PTFE offers extreme chemical inertness for aggressive solvents and gas venting.

Microglass Fiber Pleated Filters

Built with borosilicate glass microfiber media to provide exceptional dirt-holding capacity. Ideal for viscous fluids, lubricating oils, and applications requiring the removal of colloidal gels that would blind standard PP filters.

Stainless Steel Pleated Elements

Available Configurations

DOE

Double Open End

222 / Flat

Single Open End, 2 O-Rings

222 / Fin

Single Open End with Fin

226 / Fin

Locking Tabs & 2 O-Rings

Technical Parameters

Parameter	Specification Range
Micron Ratings	0.1μm, 0.22μm, 0.45μm, 1μm, 3μm, 5μm, 10μm, 20μm, 50μm
Lengths	10", 20", 30", 40" (Custom lengths available upon request)
Filter Media Options	Polypropylene (PP), Polyethersulfone (PES), PTFE, Microglass
Max Operating Temp	80°C (PP), up to 120°C (Glass fiber/PTFE with SS core)
Max Differential Pressure	4.0 bar @ 21°C ; 2.4 bar @ 65°C
Recommended Change-out DP	2.0 bar (29 psi)

Proven Field Applications for Pleated Filter Cartridges From protecting sensitive membranes to clarifying food-grade liquids, these filters are deployed where fluid purity directly impacts your bottom line.

RO Pre-Filtration

Shields expensive Reverse Osmosis membranes from silt and particulates, extending their lifespan and saving replacement costs.

Food & Beverage

Uses FDA-compliant materials for the safe clarification of bottled water, juices, and brewing processes.

Pharmaceuticals

Supports strict filtration needs with robust, chemically inert media.

Chemical Processing

Handles aggressive solvents and supports strict filtration needs with robust, chemically inert media.

Engineering Data

Why Pleated Filter Cartridges Outperform Standard Depth Filters

Choosing the right filter geometry changes your operational costs. Here is a direct comparison of how pleated structures handle flow and dirt better than traditional spun or wound filters.

Performance Metric	Pleated Cartridge	Meltblown (Spun)	String Wound
Initial Pressure Drop (ΔP)	Very Low	Moderate	Moderate to High
Dirt Holding Capacity	High (Expanded Surface)	Moderate (Depth)	High (Prone to unloading)
Filtration Accuracy	Absolute (Up to 99.98%)	Nominal (80-90%)	Nominal (Loosely defined)
Applicable Viscosity	Low to Medium (< 500 cps)	Low (< 100 cps)	Medium to High (Up to 4000 cps)
Ideal Engineering Scenario	High-Flow, Critical Precision	General Pre-Filtration	High-Viscosity, Heavy Particulate

The Structural Advantage of Pleated Geometry

Lower Initial Pressure Drop: The high surface area allows fluid to pass easily, reducing the energy load on your pumps.

Higher Dirt Capacity: Instead of plugging up quickly on the surface, the V-shape pleats distribute the dirt load evenly across the media.

Ideal for Precision Flow: Perfect for critical precision applications where you need high throughput without sacrificing micron accuracy.

Absolute Capture

Optimized Density

High Dust Capacity

Lower Energy Cost

Media Selection and Compatibility for Pleated Filter Cartridges

Matching the filter material to your chemical process is non-negotiable. Use this reference to prevent media swelling, structural breakdown, and costly bypass leaks.

Material Type	Strong Acids	Strong Bases	Organic Solvents	Engineering Notes
Filter Media
PP (Polypropylene)	Excellent	Excellent	Limited	Your reliable, cost-effective choice for general water and mild chemical filtration.
PTFE (Teflon)	Excellent	Excellent	Excellent	Specify these for highly aggressive acids, bases, or applications requiring strict sterility and low pressure drops.
PES (Polyethersulfone)	Not Recommended	Good	Limited	Specify these for highly aggressive acids, bases, or applications requiring strict sterility and low pressure drops.
Nylon	Not Recommended	Excellent	Excellent	Ideal for alkaline solutions and broad range of solvents.
Glass Fiber	Good	Not Recommended	Excellent	Avoid Hydrofluoric acid (HF) and strong hot alkalis.
O-Rings & Sealing Elastomers Selecting the correct O-ring (like Silicone, FKM, or EPDM) is critical to prevent fluid bypass at the connection points.
Silicone	Limited	Limited	Not Recommended	Standard for high-temp air/water. Poor chemical resistance.
FKM (Viton™)	Excellent	Not Recommended	Good	Exceptional for oils and acids. Fails in ketones (Acetone) and amines.
EPDM	Good	Excellent	Limited	Excellent for polar solvents (Alcohols/Ketones). Do not use with petroleum oils.

Operational Guidelines

Compatibility ratings are based on ambient temperature exposures (20°C / 68°F). When specifying filtration systems, engineers must account for the following operational variables:

Temperature Derating Elevated temperatures exponentially accelerate chemical attack. A material rated "Excellent" at ambient may fail rapidly at 80°C. Always verify thermal compatibility curves.
Elastomer Swelling Even minor absorption of organic solvents can cause O-rings to swell, leading to extrusion failure or cartridge bypass. EPDM and FKM must be strictly matched to solvent polarity.
Concentration & Exposure Duration Trace amounts of aggressive chemicals in a primary fluid flow can accumulate over time. Batch processing versus continuous flow requires different safety margins.
Mixed Chemical Streams Cocktails of acids and solvents cannot be evaluated by single-chemical data. Empirical soak testing is mandatory for complex industrial fluid streams.

Request Compatibility Analysis

Submit your process parameters. Our engineering team will recommend the optimal media and seal configuration.

Direct Engineering Contact:

Annie.chen@clearfilterpro.com

+86 13538992575

Manufacturing Process of Our Pleated Filter Cartridges

We don't just pack media into a cage. We control the pleat geometry to ensure every square inch is actively filtering, rather than pinching off and creating dead zones.

Engineer's Perspective

System Optimization Team

When you're buying industrial filters at scale, you don't just want a frame that looks solid—you need predictable fluid dynamics. We focus intensely on media geometry and seal integrity because that's where the battle against pressure drop and bypass leaks is actually won. Let's break down the mechanics of why our construction methods directly impact your operational costs.

Discuss Technical Specs

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01 Optimized Pleat Spacing

We maintain exact gaps between pleats so fluid flows uniformly, preventing localized clogging.

02 Eliminating Bypass Risks

Precise thermal sealing of the end caps guarantees that dirty fluid cannot slip past the filter media.

03 High-Velocity Integrity

Sturdy inner cores and outer cages prevent the filter from collapsing during pressure spikes or high flow rates.

Manufacturing Capability

Customizing Pleated Filter Cartridges for Your Facility

Standard catalogs don't always fit specific engineering challenges. If you have unique flow rates or housing constraints, our technical team can build exactly what you need.

Material Specification

We adapt the media (PP, PTFE, PES) and core materials based on your specific temperature and chemical thresholds.

Rapid Prototyping

From initial CAD drawings to physical prototypes, we validate the design before moving to full-scale manufacturing.

Scalable Production

Once the custom design is verified on your end, our facility handles standardized mass production to keep your supply chain steady.

Custom Filter Prototyping and Manufacturing

Validation Phase

Physical validation of custom pleated structures prior to mass manufacturing.

CAD Prototype Production

Zero Compromise Protocol

Quality Testing for Reliable Pleated Filter Cartridges

In critical processes, a single filter failure can ruin an entire batch. We rely on strict physical testing, not just visual checks, to guarantee performance.

100% Integrity Testing

Every absolute-rated filter must pass rigorous forward flow and bubble point tests before it leaves the plant.

Cleanroom Assembly

Manufactured and packaged in controlled environments to prevent secondary contamination before you even open the box.

ISO & FDA Compliance

Media manufactured according to FDA Title 21 CFR regulations; our facility operates strictly under ISO 9001:2015 quality management.

Destructive Burst Tests

We regularly subject batch samples to extreme pressure to verify structural strength and thermal weld integrity.

Engineering Data Fact

"A typical 10-inch ClearFilter pleated cartridge holds up to 30% more dirt than standard melt-blown filters, directly translating to fewer change-outs and lower maintenance downtime."

Troubleshooting Guide for Pleated Filter Cartridges

Knowing how to read your system's pressure and flow can save you from unexpected shutdowns. Here is how to diagnose common filtration issues on the floor.

Critical Maintenance Protocol

Monitor Pressure Drop (ΔP)

Operating beyond the recommended pressure threshold crushes the filter. Swap filters before reaching the critical limit.

Sudden Pressure Spikes

Usually means premature clogging.

Check Upstream Pre-filters

Check your upstream pre-filters; they might be letting large particles through.

Fluid Bypass Issues

If dirty fluid is getting through:

Inspect Seals and Assembly

Check for damaged O-rings or ensure the filter is fully seated properly in the housing.

Facing Complex Filtration Challenges?

Our specialized engineering team at ClearFilter is ready to assist with custom fluid separation diagnostics, chemical compatibility checks, and system optimization.

Contact Engineering Support

Technical FAQ

Common questions about pleated filter specifications and sizing.

What is the advantage of using a pleated filter cartridge over a melt-blown (spun) depth filter?

Pleated filter cartridges offer a significantly larger surface area—often 5 to 10 times more than a standard depth filter of the exact same dimensions. This expanded surface area translates to much higher flow rates, lower initial pressure drops, and exceptional dirt-holding capacity. While melt-blown depth filters are excellent for capturing a wide distribution of particle sizes throughout their thick walls, pleated filters are the superior choice for high-flow applications and surface filtration where maximizing flow and minimizing pressure resistance are critical.

Are pleated filter cartridges washable and reusable?

This heavily depends on the filter media material. Many heavy-duty synthetic pleated filters, particularly those made from durable Polyester (PE) or thicker Polypropylene (PP), can be gently rinsed with a hose to remove large surface debris and reused several times. However, precision pleated filters (like micro-glass or sub-micron membrane filters) used for critical, absolute filtration should never be washed. Attempting to clean them can easily rupture the delicate pore structure, compromising the filter's absolute efficiency and allowing contaminants to bypass.

How do I choose between Polypropylene (PP), PES, and PTFE pleated filter media?

The correct media depends entirely on your fluid's chemical compatibility and operating temperature. Polypropylene (PP) is the industry standard—highly cost-effective and suitable for general water, RO pre-filtration, and mild chemicals. Polyethersulfone (PES) is a hydrophilic membrane that offers exceptionally high flow rates and low protein binding, making it ideal for food, beverage, and pharmaceutical applications. Polytetrafluoroethylene (PTFE) is the premium, chemically inert option, required for highly aggressive acids, strong bases, harsh solvents, and high-temperature sterile venting.

What do the different end cap configurations (DOE, SOE, 222, 226) mean, and which one do I need?

End caps ensure a leak-proof seal within your filter housing to prevent dirty fluid from bypassing the filter. DOE (Double Open End) cartridges are open on both ends and rely on the housing's knife-edge to create a seal. SOE (Single Open End) cartridges feature O-rings on one end for a much more secure, positive seal, which is critical for high-purity applications. Common SOE styles include the 222 (dual O-rings) and 226 (dual O-rings with locking bayonet tabs). You must select the end cap configuration that perfectly matches the internal adapters of your existing filter housing.

Can pleated filter cartridges handle high-viscosity fluids like thick oils, resins, or syrups?

Yes, they are highly effective for viscous fluids. Pleated filters actually handle high-viscosity liquids much better than many standard depth filters because their massive surface area distributes the fluid pressure over a wider space, significantly reducing the risk of filter media collapse. However, when filtering thick fluids, you must ensure the cartridge is manufactured with a high-strength inner core and rigid outer cage. Additionally, the system must be sized properly—often requiring a coarser micron rating and a lower flow rate per 10-inch equivalent to maintain an acceptable operational pressure drop.

Ready to Optimize Your Filtration Process?

Discuss your specific flow rates, micron requirements, or chemical compatibility challenges directly with our engineers. We offer standard OEM replacements and fully custom configurations.

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