5 is accomplished by employing a tighter, finer filtration media. Flow direction is from inside to outside of the cartridge. This minimizes surface velocity and helps prevent the water drops from breaking up and being carried downstream. APPLICATION Coalescer cartridges are used primarily to coalesce emulsified water and remove particles from hydrocarbon fluids. The largest single application is the filtration of aviation jet fuel. They are also used with other types of fuels, process streams in refineries and petrochemical plants, and condensate streams where natural gas is produced. Other liquids can be separated if they are immiscible, the specific gravities differ, and high concentrations of surface active agents are not present. As a rule of thumb, if a sample of the mixture readily separates in an hour or two, a coalescer can probably be used. If the mixture hasn’t separated after 24 hours, coalescing probably won’t work. CONSTRUCTION Parker Velcon single-unit coalescer elements are offered with Threaded Base or Open Ends and with Fiberglass Media or Fiberglass and Pleated Media combinations. ThreadedBase Coalescers are recommended for use inmost applications. They simplify installation and replacement by eliminating the need for cover plates, center plates, nuts, washers, and gaskets. They are for use in Parker Velcon and othermake filter/ separators. Threaded base adapters are available to convert vessels presently using open end elements. Open End Coalescers are offered with single unit construction which reduces the number of gasket seals and improves overall reliability. All-fiberglass Media Coalescers combine depth particulate filtration with a deep coalescing structure. All-fiberglass designs have successively finer media layers to achieve depth-type filtration of particles. Combination Fiberglass and Pleated Media Coalescers remove particles primarily in the high surface area pleated core. They have one or more layers of pleated media inside a cylinder of molded fiberglass laminations to provide an extended surface area for particulate filtration. Pleat corrugation and separation materials are used to keep pleats open for full utilization. Coalescing and filtration performance depends largely on the fiber diameter and bulk density of the fiberglass media. Both the All-Fiberglass and the Combination coalescer cartridge designs incorporate phenolic resin impregnated fiberglass media. Several grades with fiber diameters ranging from 1 to 10 microns are used in various combinations to achieve desired results. Parker Velcon’s latest coalescer designs (85, 87 and C5 series cartridges) achieve even higher filtration and coalescing efficiency by incorporating pure micro-glass fibers with diameters of less than 1 micron in the pleated media. All-Fiberglass “6” Series Coalescer Fiberglass and Pleated Media “87” Series Coalescer 6000T Threaded Base Adapter 6” Diameter Threaded Base and Open End Coalescer End Caps
RkJQdWJsaXNoZXIy NDE1MjE4