Coalescing Filter Elements

Description

Our microfiber disposable filter elements are manufactured from precisely controlled blends of borosilicate glass microfibers, produced to rigorous quality standards. The highly uniform microfiber matrix delivers exceptional filtration efficiency while maintaining very low pressure drop. With a void volume exceeding 90%, these elements provide high contaminant holding capacity, quick liquid drainage, and extended service life.

The microfibers are chemically bonded to ensure high mechanical strength, dimensional stability, and resistance to fiber migration or shedding under operating conditions. Multiple binder systems are available, enabling optimization of element construction for specific fluid compatibility, operating temperatures, and environmental conditions. Filter elements are offered across a broad range of nominal and absolute efficiencies, from coarse bulk particulate removal (Grade 80) to near-complete elimination of sub-micron contaminants.

At the core of our coalescing filters is a fully disposable element made entirely from borosilicate glass microfiber. The coalescing elements feature a two-layer structure: an inner particle capture layer and an outer drainage layer. Captured liquid droplets remain mobile within the fine-pored capture layer, migrating along the intersecting microfibers and growing in size as they progress. These coalesced droplets are then transferred to the large-pored drainage layer, from which they drain by gravity into the filter bowl.

The coalescing elements are completely self-supporting and are installed in the filter housing simply by tightening a retaining nut. No end caps, gaskets, or support cores are required. The elements are designed for an initial dry pressure drop of less than 2 psi. During operation, the pressure drop increases gradually as solid particles are captured within the media. We recommend replacing the element when the differential pressure reaches 10 psi.

Coalescing elements must always operate with flow from the inside to the outside of the element to ensure proper liquid drainage.  These elements also simultaneously collect solid particulates, which will shorten element life.