8 FEATURES Optimum 2nd stage water removal Choice of Teflon® Coated Screen, Synthetic or Pleated Paper Media Field proven performance Largest selection of replacement elements DESCRIPTION Separator Cartridges are employed as the second stage in filter/ separator vessels. Their sole function is to repel coalescedwater drops produced by the first stage cartridges while allowing hydro-carbon fluids to pass through. Water drops settle into the filter/ separator sump and are not carried downstream. All particle filtering is done by the first stage coalescer cartridge. Flow direction is fromoutsideto-inside. The top photo insert shows water being repelled by the hydrophobic separator medium on the cartridge’s outside surface. Hydrocarbon fluids, on the other hand, easily pass through and exit the separator cartridge. Cartridges with three different types of repellingmedia are offered: Teflon® Coated Screen (TCS) Cartridges are, by far, themost popular type of separator cartridge. With proper cleaning and inspection, cost effective TCS elements can be reused over many changeout cycles. And, TCS cartridges generate considerably less static charge than pleated paper cartridges. These features have made them the preferred choice for aircraft fueling applications. Pleated Paper Cartridges cannot be reused and are replaced at every coalescer cartridge changeout. They are often usedwith diesel and other fuel oils whichmay containmaterials that adhere to TCS cartridges and cannot be cleaned off. SyntheticMedia Cartridges can be cleaned amaximumof two times. They are intended for customers who do not want to take the time to clean and re-use separators. SEPARATOR CARTRIDGE PERFORMANCE Maintaining a uniform flow along the length of the cartridge optimizes performance and reduces the number of cartridges required. Flow is controlled by a tube, inside each cartridge, through which the hydrocarbon fluid exits the cartridge and the filter/separator vessel. Two styles of inner tube are offered. See bottom photo. Cartridges with uniform hole pattern inner tubes are adequate for many applications. However, where optimum flow distribution is required, cartridges with variable hole pattern inner tubes are recommended. When converting older equipment, a lesser number of variable hole pattern cartridges is usually required. Operating costs will therefore be reduced. SEPARATORCARTRIDGES Model numbers containing a “C” in denotes a uniform hole pattern on the inner tube with TCSmedia, while the codes with a “V” signifies a variable hole pattern with TCSmedia. Blind caps have a hole for the tie rod. Separator Cartridges Filter/Separator 2nd Stage Elements Coalesced water drops from the first stage are shown (above) intruding upon the surface of the TCS Separator Cartridge. The droplets are repelled by the Teflon coated screen, enabling the droplets from passing through. The screen magnification shows how the droplets form on the surface of the Teflon coating. INNER TUBE HOLE PATTERN Uniform Variable
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