Pleated Filter Cartridges (ISO 2941 / ISO 16889 beta-rated) is specified where the duty calls for high-area, low-pressure-drop fine filtration of liquids, compressed air and gas. The sections below cover the typical end-uses by industry, the mesh, micron and material decisions for each, installation practice, and the applications this product type is not suited to.
Typical Applications for Pleated Filter Cartridges
The most common settings where this is specified:
- Maintenance & replacement (MRO): matching an existing mesh, screen or element spec when servicing installed equipment.
- Hydraulics & lubrication: in-line and return-line filtration of oils.
- Polymer & extrusion: screen packs and candle filters in melt lines.
- Process & chemical: cartridge and basket filtration of process fluids.
- Water & beverage: pre-filtration and final polishing.
How to Specify Pleated Filter Cartridges for Your Application
- Mesh count / micron rating: Match the aperture or micron rating to the smallest particle you must retain or pass. The table below lists mesh count, aperture and micron for each option — for woven cloth, specify the aperture or micron, not just the mesh count.
- Micron & construction: Set the micron/beta rating and construction (single layer, multi-layer pack, pleated or sintered) for the flow and dirt load.
- Material / alloy: Select the alloy for the environment — 304 for general use, 316L for chlorides, food and chemicals, brass or copper for shielding, and Monel, Inconel or Hastelloy for marine, acid and high-temperature service.
- Environment: For damp, coastal, chemical or high-temperature service move up to 316L or a nickel alloy; for dry indoor duty 304 or a coated steel is usually enough.
- Standard: This product is supplied to ISO 2941 / ISO 16889 beta-rated. Quoting the standard on your order guarantees interchangeable dimensions and filtration data between suppliers.
Handling & Installation Practice
- Install with the coarse guard/support layer upstream and the fine filtration layer downstream — check the flow arrow on the element.
- Seat the gasket, DOE or bayonet end squarely so unfiltered fluid cannot bypass the element.
- Where the duty allows, backflush or ultrasonically clean rather than replacing — woven and sintered media are reusable.
Common Selection Mistakes with Pleated Filter Cartridges
- Rating an element by nominal micron only and ignoring the beta ratio, so real efficiency is far lower than expected.
- Fitting an element the wrong way round, so the fine layer sees the full dirt load and blinds immediately.
- Choosing a disposable cartridge for a duty where a cleanable sintered or wire-cloth element would pay back quickly.
Where Pleated Filter Cartridges Is Not the Right Choice
Not for coarse bulk screening (an oversized straining basket or perforated sheet is cheaper) and not where the duty exceeds the element's temperature, pressure or chemical rating.