FF-250 Series Filters. As a coalescer, this filter removes liquid droplets and particles down to 0.1 micron with an efficiency of 95% or greater. The thick, high capacity borosilicate glass and Teflon filter element uniformly drain coalesced liquids to the bottom of the housing, then evacuated through the 1/8″ NPT drain port. For particulates,the filter removes 95% of all particles 0.1 micron or greater, with low pressure drop and long element life.
Coalescing filtration is achieved by forcing the gas stream through the filter element (see illustration). The flow path shown reflects a coalescing application. Small aerosol particles are forced together as they pass through the fine inner layer of the filter element. Larger drops created in this process fall out of the gas stream due to their mass. This natural separation is assisted by the coarse drain layer on the outside of the filter element. In a particulate application, this filter can be installed to reverse the flow path shown. The captured particulate collects on the outside surface of the element, permitting visual determination of element condition.
see also: ACES Sampling Systems
