Filter Bags vs Cartridges for High-Flow Process Water
Cartridge filtration is the right specification for most commercial and light-industrial process water applications. At high flow rates, high solids loading, or coarse micron requirements, bag filtration is the right specification.
Cartridges handle 4–15 GPM for standard elements, while bag housings manage 50–100+ GPM.
Cartridges cover sub-micron to coarse sediment ratings with absolute-rated capabilities. Bag filters typically operate in the 1–200 micron range with limited fine filtration options.
Bag Filtration
High-flow, high-solids scenarios.
Cartridge Filtration
Fine, absolute-rated filtration requirements and applications needing carbon adsorption or NSF/ANSI compliance.
For applications requiring both high flow and fine filtration, a two-stage system combining bag pre-filtration with cartridge polishing optimizes performance and extends service intervals.
Frequently Asked Questions
When should I use filter bags instead of cartridges?
Bag filtration is the right specification at high flow rates (50–100+ GPM), high solids loading, or coarse micron requirements. Cartridge filtration is correct for most commercial and light-industrial process water at 4–15 GPM.
What micron range do bag filters cover compared to cartridges?
Bag filters typically operate in the 1–200 micron range with limited fine filtration options. Cartridges cover sub-micron to coarse sediment ratings with absolute-rated capabilities for finer, more precise filtration.
Can bag and cartridge filtration be combined in one system?
Yes. For applications requiring both high flow and fine filtration, a two-stage system with bag pre-filtration followed by cartridge polishing optimizes performance and extends service intervals.
Which filtration type is required for NSF/ANSI compliance?
Cartridge filtration is generally specified when applications need carbon adsorption or NSF/ANSI-compliant fine, absolute-rated filtration — bag filters are not typically used for that requirement.