A manufacturer-released glossary now defines felt, mesh, oil-adsorbing, and FBD/FBP bag terms in one A-to-Z list. [S1]
For specifying engineers, a consolidated vocabulary for bag filters reduces ambiguity in RFQs and datasheets, particularly around micron rating, depth versus surface filtration, and housing compatibility. The glossary also frames selection criteria as a function of particle size, fluid chemistry, operating temperature, and flow conditions, which maps directly to the inputs a process engineer must pin down before selecting a media type. Procurement teams gain a common reference for comparing felt, mesh, oil-adsorbing, and FBD/FBP bags across vendors without reconciling marketing language. The presence of housing size codes (#1, #2, #4) and explicit micron ranges (1 µm to 200 µm for liquid bags) gives specifiers concrete cross-checks against their P&IDs and housing drawings. [S1]
What happened
Praimo Industrial Filters & Spares Manufacturing Company has published a Filter Bags and Filtration Media Technical Glossary, framed as an A-to-Z reference for industrial filtration terminology. [S1]
The glossary is positioned for engineers, plant operators, and procurement teams and is described as being based on the company's manufacturing knowledge and multi-industry application experience. [S1]
Coverage explicitly includes felt filter bags, mesh filter bags, oil-adsorbing filter bags, dust collection bags, FBD and FBP filter bags, centrifuge filter bags, and industrial woven and non-woven filtration media. [S1]
Definitions and named product families given
The article defines a filter bag as a replaceable porous element used to remove solids from liquid or gas streams. [S1]
Felt filter bags are described as needled or singed polyester or polypropylene felt for depth-type filtration, with the publisher noting thermal welding to eliminate fiber migration. [S1]
Mesh filter bags are defined as woven nylon or polyester monofilament fabric for surface filtration, with the publisher citing high-flow, low-viscosity applications such as inks and cooling water. [S1]
Oil-adsorbing filter bags are described as media treated to adsorb hydrocarbons from process or wastewater streams, with the publisher claiming removal of up to 10 times the bag's weight in oil. [S1]
What it means for bag filter specification
The glossary makes explicit the distinction between depth filtration media, as used in felt bags, and surface filtration media, as used in mesh bags, giving specifiers a clean binary to map against their process requirements. [S1]
The stated 1 µm to 200 µm range for liquid filter bags, combined with the named housing sizes #1, #2, and #4, lets a specifying engineer cross-check vendor data sheets against the dimensions and ratings already on their equipment drawings. [S1]
The inclusion of FBD and FBP filter bags alongside dust collection and centrifuge bags signals that the reference is intended to span liquid, air, and solid-liquid separation duty, not just one application class. [S1]
An engineering insight within the article states that correct filter bag media selection should be based on particle size, fluid chemistry, operating temperature, and flow conditions, which mirrors the inputs required on most bag filter datasheets. [S1]
How to verify the primary source
The article is hosted at praimo.com under the title Filter Bags & Media Glossary and carries a published time of 2026-02-17T09:55:19+00:00, with a referenced date of 18 Aug 2026. [S1]
Several entries, including FBD Filter Bag, are truncated in the body text captured for this summary, so the full A-to-Z term list, any appended definitions, and updated micron or compatibility claims should be checked at the source URL before quoting the glossary in a specification. [S1]
Specifiers should also confirm the current product line scope, particularly the FBD and FBP bag offerings, directly with the manufacturer before issuing an RFQ. [S1]
Primary notice: Industry news.
Product encyclopedia: Bag Filter.