Maximizing Filtration With Rosedale's Unique “Y ... - Filtration News

many particles smaller than theabsolute rating of the media. Inmost cases this media functions asa surface type media, but inapplications with a large particlesize distribution it may alsocapture some particles within thematrix of pores beneath thesurface. Due to its comparativelylow porosity, it has the highestclean pressure drop of the threemedia (.5 psi at 10 gpm/ft2 ofwater flow).• Sintered fiber metal felt is alsocharacterized as having a broadpore size distribution and thus theability to also capture particlessmaller than its absolute rating.This media is perhaps the ultimateporous metal depth media, with avery high porosity, which allowsfor the highest dirt holdingcapacity of all of the three. Due toits very high porosity andpermeability, it has the lowestclean pressure drop of the threemedia (.03 psi at 10 gpm/ft2 ofwater flow).• Woven wire cloth is characterizedas having a very narrow pore sizedistribution, thereby having asharp particle removal cut-off. Inmost cases, wire cloth is used as asurface type media, which maylimit its on-stream life if measuressuch as pleating the media toprovide more effective area aren’ttaken. Due to its relatively highporosity and permeability, it has arelatively low clean pressure dropof the three media (.06 psi at 10gpm/ft2 of water flow).Flow rates and pressure dropsnoted for each media are based on 20micron absolute media.Many factors should be consideredwhen selecting the optimum porousmetal media for an application.Among them are the required particleremoval rating, desired cleanpressure drop, clean-ability of the filterin situ and externally, mechanicalstrength of the media, and of coursethe initial cost and cost of operation/maintenance.FNMark Willingham is Director ofSales & Marketing for Purolator AdvancedFiltration. He has 30 years ofexperience in the field of porousmetal filter products for applicationsin the oil & gas, chemical processing,nuclear power generation, polymer,and general industrial markets.For more information contact:Purolator Advanced FiltrationTel: 1-336-217-3822Fax: 1-336-668-4452Email: mark.willingham@purolator-facet.comWebsite: www.purolator-facet.comVisit us onlinewww.filtnews.comJune 2012 • www.filtnews.com • 21