Components
Secondary Filtration Device
CYprocess secondary filtration devices — also called after-filters or polishing filters — sit downstream of receivers and vacuum pumps and catch the fines that pass the primary stage. Exhaust air stays clean even when the primary filter is near the end of its life.
Shanghai-built. Drawings come with the quotation, and material certificates are available on request. Factory and documents
Overview
About Secondary Filtration Device
How this equipment works in powder handling lines and what to consider when selecting it.
Working principle
Air from the receiver or pump enters the stainless housing and flows through a cartridge stage sized for the fine fraction. Because the load here is light — it is the residual after the main filter — cartridges last long and the pressure drop stays low through the whole campaign.
Options and integration
Housings are sized to the air flow of the conveying package, with differential pressure indication to show cartridge state. They mount on vacuum pump exhausts, receiver vents and blower inlets where ambient dust must stay out of the machine.
Where it fits in the process
Features
Key Features
Design points that make the Secondary Filtration Device practical for industrial powder plants.
Specifications
Typical Specifications
Final sizing depends on material properties, capacity and plant layout. Request a project review for a tailored proposal.
| Type | Cartridge polishing filter |
|---|---|
| Housing | SS304 / SS316L |
| Cartridges | Quick-change, standard lengths |
| Indication | Differential pressure gauge |
| Flow | Sized to the package air flow |
| Mounts | Pump exhaust, receiver vent, blower inlet |
Materials
Suitable Materials
Powder and granule categories typically specified with a secondary filtration device. Suitability is confirmed per project from bulk density, particle size, moisture and process conditions.
Fine powders
flour, milk powder, pigments
Battery materials
cathode, anode, carbon blacks
Pharma solids
API dust, excipients
Chemicals
resins, fine additives
Not sure whether your material will convey? Send us a sample description and we will confirm before quotation.
Applications
Process Applications
Process points where this equipment is typically installed, from bulk intake through to packing.
Downloads
Catalogs & Datasheets
Technical documents related to this product and our powder handling range.
Product Catalog
CYprocess Powder Handling Product Catalog (2026)
PDF · 3.5 MB
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DownloadFAQ
Secondary Filtration Device FAQ
Common questions about selection, integration and quotation.
On ordinary duties the primary stage is enough. Where exhaust air must stay clean regardless — cleanroom adjacency, hazardous products, or a pump that must not ingest fines — the secondary stage is cheap insurance because it only ever sees a light residual load.
System partners
Related Products
Equipment commonly paired with Secondary Filtration Device in complete powder handling lines.
Engineering support
Enquire about Secondary Filtration Device
Share your material, capacity and plant layout. Our engineers will confirm sizing and send a tailored proposal.