Industrial filters: AeroSep coalescers and pleated elements

AeroSep is Exova's line for separating liquids and solids from air and gas streams. It has three models: AeroSep Coalescer, the standard line of 4″ coalescer cartridges; AeroSep Retrofit Coalescer, the direct replacement for Pall® LG series coalescers; and AeroSep First Stage, the replacement for Jonell TRI-SHiELD™ JFS cartridges for filter separators and dry gas filters.

A filter separator works in two stages. In the first, the AeroSep First Stage retains solids—sand, iron oxide, and iron sulfide—and pre-coalesces fine droplets. In the second, the vane pack or the coalescing elements, such as the AeroSep Coalescer and AeroSep Retrofit Coalescer, separate the already coalesced liquid, which drains to the bottom of the vessel. That is why the AeroSep First Stage is not a coalescer: it is the preceding stage that complements them. In coalescer vessels with the AeroSep Coalescer, by contrast, the baffle box sits upstream of the cartridges, as pre-separation of free liquid and large droplets.

The AeroSep Coalescer and the AeroSep Retrofit Coalescer use resin-bonded glass fiber, hydrophobic and oleophobic (grade H): the medium does not wet, drains the coalesced liquid, and prevents re-entrainment into the outlet gas. The AeroSep First Stage uses a dual layer of pleated glass microfiber—prefilter and final filter—on polyester and mesh supports, in ratings from 0.3 to 10 µm and up to 120 °C.

Besides the AeroSep coalescers, we manufacture pleated filter elements that retain particles in liquid fuels, hydraulic oils and gases. The filter medium is glass microfiber or metal mesh, depending on the retention grade and the service.

They are made in different heights, to suit the unit where they are installed. To define each one, we need the fluid, the flow rate, the retention grade and the dimensions of the installed element or the housing.