2Water Tech Thermally Bonded Filter Cartridges Advantages vs. String Wound:Higher CapacityGraded DensityNo Surface BlindingLess FoulingNo Fiber UnloadingNo Chemical LeachingHigher Flow RateLow Pressure DropSuperior StructureCost EffectiveSedifilt filters are made of polypropylene, a recognized environmentally safe and recyclable material for purity and ease of disposal. Polypropylene incinerates to trace ash with no hazardous volatiles for environmentally friendly disposal.
3Water Tech Thermally Bonded Filter Cartridges Higher Capacity:Graded DensityDenser inner layers, more lower density outer layers.No Surface BlindingParticles trapped throughout cross-section of filter.
4Water Tech Thermally Bonded Filter Cartridges Less Fouling:No Fiber UnloadingMade of continuous melt-blown filaments.No fibers migrate to RO.No Chemical LeachingNo chemicals used in melt blown process.No downstream foam in filtrate.Higher Dirt Holding Capacity5 micron 10” (Example)Dirt Holding CapacityTypical String Wound30-55 gmWater Tech Thermally Bonded108 gm
5Water Tech Thermally Bonded Filter Cartridges Higher Flow Rate:Low Pressure DropThree-dimensional, rigid, low pressure structure.Improved solid to void ratio for higher flow rates with low pressure drop.Superior Structure100% pure polypropylene homo-polymerPolypropylene coreWide chemical compatibility.Excellent micro-organism resistance.Excellent end sealing.Easy disposal, incinerates to trace ash.
6Water Tech Thermally Bonded Filter Cartridges Performance Data: Test Method: Retention Efficiency and Capacity per ASTM F795 Instrumentation: LD 400 SNFluid: Water Temperature: Ambient Contaminant: ISO Fine Test DustTest Method: Water at ambient temperature (25 °C.) Flow in US gallons per minuteTest Method: Efficiency and Capacity per ASTM F Instrumentation: LD 400 SNFluid: Water Temperature: Ambient Contaminant: ISO Fine Test Dust
8Water Tech Thermally Bonded Filter Cartridges Applications:RO Pretreatment (SDI Reduction)Drinking Water and Beverage ProcessingSea Water DesalinationDeep Well InjectionGas PurificationCooling Tower Water FiltrationElectronics and ElectroplatingIndustrial Process WaterPharmaceutical & HealthcareChemical IndustryED Automotive PaintPhotographic SolutionsWastewater DisposalAnd more …
9Conventional String Wound Filter Cartridges Problems with Conventional String Wound Media:Fiber UnloadingShort fibers not properly or fully locked into main body.Fibers come loose and migrate to RO or filtrate.Loose fiber ends clearly seen in spiral wound yarn media.Chemical LeachingString Wound yarn finish chemicals (lubricants, surfactants, antistatic agents, emulsifiers, bactericides, etc.) leach out.Can cause foaming in filtrate.Surface BlindingLow Dirt Holding CapacityTypically Higher Pressure DropString Wound Yarn Media