PALL PFNM40-40-H13 Equivalent High Flow Filter Cartridge
Introduction:When handling high-viscosity liquid clarification and industrial circulating water pre-filtration projects, plant managers select reliable Liquid Filters and Self Cleaning Filter to achieve stable particle interception and reduce equipment downtime. The PALL PFNM40-40-H13 high flow filter cartridge is widely used to replace standard size 2 bag filter bags for demanding viscous fluid filtration. However, many customers face long delivery cycles and high purchasing costs for original spare parts. This equivalent high flow cartridge serves as a direct drop-in replacement. It features 40μm absolute polypropylene gradient depth media, inside-to-outside flow path and EPDM sealing, fully matching the dimension and performance specifications of PFNM40-40-H13 for high viscosity liquids and general industrial water treatment.
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Product Introduction
This industrial high flow filter cartridge can be installed into existing bag filter housings to replace traditional filter bags, and it can work together with Self Cleaning Filter to build multi-stage pretreatment systems to protect downstream process equipment. The PFNM40-40-H13 equivalent cartridge adopts high dirt-holding polypropylene depth melt-blown continuous fiber web structure. With 40-inch length and 6-inch outer diameter, it can directly fit standard No.2 bag filter housings without housing modification. The gradient depth media structure can trap particles of different sizes layer by layer, offering strong anti-clogging performance especially for liquids with gelatinous and irregular solid particles. Many factories rely on this type of filter element for paint, resin and circulating water filtration, yet high cost and long lead time bring obstacles for routine maintenance. Our equivalent replacement cartridge keeps the same overall size, end cap design, inside-to-outside flow structure and EPDM sealing. Contaminants are trapped inside the cartridge during filtration, avoiding housing contamination during element replacement.
Working Principle
This PFNM40-40-H13 equivalent cartridge adopts inside-to-outside flow design. Raw liquid enters the inner cavity of the filter cartridge first, then flows outward through the progressive gradient depth polypropylene media. Suspended solids, gelatinous impurities and irregular particles are captured and retained inside the filter web, while the clarified liquid flows out from the outer surface of the cartridge. The progressive pore structure captures coarse particles on the inner layer and fine particles on outer layers, maximizing dirt holding capacity and extending service cycles. When matched with upstream Self Cleaning Filter, large solid impurities are removed beforehand, lowering particle load on the cartridge and stabilizing operating differential pressure.
Technical Specifications Table
| Item | Parameter |
|---|---|
| Model | PFNM40-40-H13 |
| Absolute Filtration Rating | 40 μm |
| Nominal Length | 40 inch (approx 1016 mm) |
| Nominal Outer Diameter | 6 inch (152.4 mm) |
| Flow Structure | Inside-to-Outside, impurities trapped inside cartridge |
| Filter Media | Polypropylene gradient depth melt-blown continuous fiber web, high dirt holding capacity |
| Seal Material | EPDM (H13) |
| Max Operating Temperature | Approx 82℃ |
| Recommended Replacement Differential Pressure | 2.1 bar, max allowable differential pressure 3.4~4.0 bar |
| Feature | Direct replacement for standard No.2 bag filter bags |
Core Advantages
1:1 Drop-in Replacement for PALL PFNM40-40-H13
Identical dimensions, end cap interface, inside-to-outside flow path and EPDM seal. Direct installation in existing No.2 bag filter housings, no housing modification needed.
Replace Traditional Bag Filter Bags With Higher Performance
Install inside standard bag filter vessels to replace #2 filter bags, greatly increasing filtration area and contaminant holding capacity for longer service life.
Gradient Depth Media For Anti-clogging Performance
Progressive pore structure captures mixed-size suspended particles layer by layer. Ideal for high viscosity liquids containing gelatinous and irregular solid contaminants.
Cleaner Element Replacement
Impurities stay trapped inside the cartridge during operation. Reduced risk of contaminating filter housing during cartridge change-out compared with conventional filter bags.
Wide Chemical Compatibility
Full polypropylene media paired with EPDM seals, stable for most water-based fluids, paints, resin and general chemical liquids under 82℃.
Works With Multi-stage Filtration Systems
Combined with upstream Self Cleaning Filter to remove large particles in advance, reduce cartridge contamination load and extend service interval.
Application Scenarios
Resin, coating, paint and ink high-viscosity liquid clarification
Industrial circulating water and cooling water pre-filtration
Petrochemical and general chemical large-flow liquid clarification
Industrial process liquid protection for pumps and downstream instruments
Water pretreatment for RO membrane systems
FAQ
Q1: Can this cartridge replace PALL PFNM40-40-H13 directly?
A1: Yes. It matches the size, flow direction, media construction and EPDM seal, and fits standard No.2 bag filter housings.
Q2: What is the filtration rating?
A2: 40μm absolute filtration rating.
Q3: What is the maximum operating temperature?
A3: Approximately 82℃.
Q4: What is the recommended replacement differential pressure?
A4: Replace when differential pressure reaches 2.1 bar, maximum allowable differential pressure is 3.4~4.0 bar.
Q5: What type of liquids is it best suited for?
A5: It is ideal for high viscosity fluids such as paints, resins and industrial circulating water, especially fluids with gelatinous or irregular solid particles.
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