At a Glance
Bag housings hold a replaceable bag inside a support basket. Cartridge housings hold one or more cylindrical elements. Bag filtration is often selected for general solids removal and higher dirt loading; cartridge filtration is often used for finer or polishing stages. Actual performance depends on media and operating conditions.
| Factor | Bag Filter | Cartridge Filter |
|---|---|---|
| Element | Bag supported by a basket | Cylindrical cartridge |
| Typical role | Coarse / pre-filtration | Fine / polishing filtration |
| Solids loading | Often suited to higher solids load | Capacity varies by cartridge design |
| Maintenance | Replace or clean the bag | Replace or clean as specified |
When a Bag Filter May Fit
Consider a bag housing when the process contains suspended solids, a larger dirt-holding element is useful, or consumable cost and straightforward maintenance are priorities. Bag ratings span coarse through fine applications, but nominal rating and removal efficiency depend on the media.
When a Cartridge Filter May Fit
Consider a cartridge vessel when the process requires finer filtration, a specific cartridge format or a polishing stage before membranes, filling equipment or sensitive process steps. Select element type, length, end connection and seal material carefully.
Why Use Both?
Where incoming liquid carries larger particles, a bag filter can serve as the first stage and reduce the load on a finer cartridge stage. This may extend cartridge service life, but select the arrangement from process data rather than assuming it is required in every system.
Share the liquid, flow, solids and downstream requirement for a recommendation. See our bag filter housings and cartridge housings.