Air cartridge filters
Replacement elements for cartridge dust collectors, local extraction and OEM units, selected by geometry, media, surface treatment, gasket and mounting interface to suit the process conditions.
High filtration area in a compact housing
Pleated media captures dust on the fold surface. As differential pressure rises, the controller sends a short pulse of dry compressed air and the released dust falls into the hopper. Media area, pleat spacing and filtration velocity are calculated for the dust; overly tight pleats impair cleaning.
Three things are monitored in service: ΔP across the clean and loaded stage; pulse cleaning with dry, treated air only; gasket sealing and correct seating of the element.
Cartridge type follows the collector and dust duty
We match mounting dimensions, airflow direction, cleaning method, required area and media. Outside diameter alone is not enough for a reliable replacement.
The standard element for vertical or horizontal installation, with open/open or open/closed ends, threaded stud or retaining cap.
Look inside →02Pulse cleaningConicalThe taper supports pulse propagation and dust release between adjacent elements in densely packed collectors.
Look inside →03Low profileOvalFor low-profile housings and side access, retaining filtration area where installation depth is limited.
Look inside →Fast twist-to-lock replacement. Flange profile, gasket height and receiver compatibility must match exactly.
A thin surface layer limits fine-particle penetration into the substrate and supports pulse cleaning; the finish depends on moisture and chemistry.
Flanged or threaded ends, metal caps, non-standard length, inner or outer mesh, flame-retardant and elevated-temperature versions.
Substrate, surface layer and finish work together
Temperatures shown are typical guidance, not a guaranteed rating. The final limit must be confirmed for the media, adhesive, end caps and gasket as an assembly.
- Typical duty
- Dry coarse and medium dust at moderate loading
- Benefit
- Economical with high media area
- Check before selection
- Humidity, condensation and a typical limit near 80 °C
Important: a standard air-filter cartridge as a complete assembly is rated to a maximum of 135 °C. The supplied polyester sample sheets state up to 120 °C for continuous duty. Values of 180–260 °C belong to selected baghouse or pleated-bag media and must not be applied to a standard cartridge.
Data needed for a replacement cartridge
- 01Dimensions
Outside and inside diameter, length, flange, opening and end-cap dimensions.
- 02Dust
Composition, particle size, concentration, abrasion, stickiness, moisture and combustibility.
- 03Operating duty
Airflow, temperature, humidity, chemistry and operating differential pressure.
- 04Collector
Maker, model, receiver photo, airflow direction and pulse-system settings.
Typical duties
An antistatic cartridge alone does not make combustible-dust service safe. The system needs a dust-hazard assessment, conductive bonding, earthing and the engineered venting, suppression or isolation measures required for the site.
Where it works and where it does not fit
- Fine dry dust: welding, laser, cement, powders
- Local extraction and compact collectors — 40–60% less floor space than a baghouse
- OEM replacement by dimensions, interface and media
- Pulse cleaning with dry, treated compressed air
- Above 135 °C for the assembly — a pleated bag or baghouse is needed
- Oil mist and wet aerosol without an oleophobic finish
- Combustible dust without an explosion-protection concept
- Wet compressed air, sticky dust and tight pleats — ΔP rises quickly
Frequently asked questions
Can a cartridge be selected from a photo alone?
A photo helps identify the type, but manufacturing requires exact dimensions, end geometry, gasket, media, airflow direction and operating duty.
Which is better: nanofibre or PTFE?
There is no universal winner. Nanofibre often suits fine dry dust and pulse cleaning; PTFE is selected for a stronger surface barrier, difficult dust or moisture after checking pressure drop and lifecycle cost.
Can cartridges be washed?
Only where the media and maker permit it. Polyester usually tolerates washing better than cellulose, but incorrect cleaning damages pleats, membrane and gasket.
Why does differential pressure rise quickly?
Typical causes are high inlet loading, sticky or wet dust, excessive filtration velocity, weak pulses, wet compressed air, tight pleats or failed hopper discharge.
When should the cartridge set be replaced?
After persistent terminal ΔP despite correct cleaning, media or gasket damage, dust breakthrough or the agreed service interval. Elements in one stage are normally replaced as a set.
Can you supply by OEM reference?
Yes, after checking the reference, drawing and operating conditions. Equivalence is verified by dimensions, area, media, efficiency, ΔP and sealing quality, not by name alone.
Cartridge shapes in 3D
Related guides
Cylinder, cone and oval designs; cellulose, spunbond, nanofibre, PTFE and antistatic media — the air cartridge type table.
Open →Cartridge temperature limitWhy the standard cartridge maximum is 135 °C: media, adhesive, end caps, cage and gasket are rated as one assembly; the PET samples state 120 °C continuous.
Open →Baghouse or cartridge collector
3DCompact fine-dust duty versus high loading, temperature and severe operation — how to compare the two technologies.
Open →Pleated bag or cartridge
3DWhy a high-temperature pleated bag is not a standard cartridge and what to check before retrofitting a baghouse.
Open →Send one used cartridge or its drawing
We will verify dimensions and mounting and propose media for your dust. For a new system we calculate airflow, media area and element quantity.