HellanStrainerSalsePresentation

HellanFluidStrainersANDFILTRATIONSYSTEMSHistoryofStrainersASyrianarcheologistuncoveredstrainersthatdatebacktothesecondmillenniumB.C.1967WickerStrainerforHandOperatedMobileFirePump:DuplexStrainerSimplexStrainersCommonIssueswithSimplexorDuplexStrainersNeedtobemanuallycleanedThisresultsinhiddenlaborcostsandlostlabortimeBasketStrainersareHardtoCleanCleaningislaborintensiveOverheadcranesaresometimesrequiredDirtyjobTimeconsumingEmployeecontactwithpossibledangerousmaterialAutomaticSelf-CleaningStrainersvs.Simplex/DuplexStrainersAutomatic,self-cleaningstrainersoffercustomersmaintenance-freeserviceversustheconstantlaborcostformanualcleaningofsimplex/duplexstrainersAutomaticStrainersvs.DuplexStrainersNobasketstoremoveOptionalverticalinstallationCleanedinsecondsvs.uptohoursforduplexstrainersLesscostlythanduplexstrainers(8&larger)NobasketstoloseduringcleaningNophysicalcontactwithcontaminantsLowmaintenance/operationalcostsAutomaticSelf-CleaningStrainersTwoTypesofAutomaticSelf-CleaningStrainersScraperBar/Brush&LinePressurePressureDifferentialSuctionStyleAutomaticHellan®StrainerSizingCharacteristicSizeat1.5psicleanpressuredroporless100Micronsandlargerfiltrationlevel100PartspermillionorlessofparticulateintheflowstreamScreenperforationholediametershouldbeselectedthatis40%to60%ofthediameterofthesmallestorificeinthesystemCleaningProcess1.Asdirtyfluidpassesthroughthescreen,solidsareremoved2.Flowthroughthescreenisoutside-in2.Debrismovestothesumpareawhereitisremovedbyperiodicflushing3.CleanfluidpassesoutthestrainerandintoprocessUniqueFeaturesThatProvideRealBenefits30SecondstocleaningcycleSolidstrappedonoutsideofbasketElementrotatesandbasketisscrapedcleanSystemlinepressureandflushvalveassistsincleaningofstrainerelementNointerruptionofflowSafetyforemployeesLongservicelifeLowmaintenancecostSuctionStyleAutomaticStrainersFlowisinsidethestrainerelement,thenoutSuctionwandrotates360ºusingpressuredifferentialtoremoveparticulateMinimumoperatingdelta-p,30psigClearancebetweenthesuctionwandandscreenIDis1/4OtherManufacturers’AutomaticStrainerDesignsIneffectivereversecleaningofstrainerelementHigh-maintenanceitemLongflushcycleOtherManufacturers’AutomaticStrainerStructureHellanStrainerAdvantagesvs.OtherAutomaticStrainersInterfaceofscraperbarorbrushcontactingtheODofthestrainerelement(patenteddesign)Dualstrainerelementsvs.onebyourcompetitorsOptionalverticalinstallation(DA/DHSeries)LowmaintenanceLessmovingpartsthanothermanufacturersShortcleaning/flushcycles(15-30seconds)ascomparedtothreeminutesplusbycompetitorsWorkswellinZebraMusselapplicationsDesignFlexibilityManualorautomaticoperationChangefrommanualtoautomaticinthefieldFullarrayofstandardorcustomizedcontrolsBody&CoverplateMaterialsofConstructionforDA/DHSeriesCastIron125lb.&250lb.ANSIClassFlangeCastSteel150lb.&300lb.ANSIClassFlangeCastStainlessSteel150lb.&300lb.ANSIClassFlangeCastBronze150lb.&300lb.ANSIClassFlangeAvailableSizes3to12ModelsDH/DASeriesDualscreens–manualorautomaticconfiguration14&16SASeriesAutomatic,singlescreendesignwithcastductileironbody14&36WDASeriesAutomatic,dualscreenelements,fabricatedsteelbodyFlowCapacity3to12ModelsDH/DASeriesDualscreen:0-3,000GPM@1.5PSIcleanpressuredrop14&16SASeries(SingleScreen)0-6,000GPM@1.5PSIcleanpressuredrop14&36WDASeries(DualScreens)0-25,000GPM@1.5PSIcleanpressuredropTypeDADualScreenStrainer3-12SA&WDAFlowDiagramWDAStrainerSeries--DualStrainerElementsAvailablefrom14to36SAStrainerSeries--SingleStrainerElementAvailablein14&1618WDAStrainerwithEpoxyCoating18WDAStrainerwithEpoxyCoating18WDAStrainerwithEpoxyCoating20WDAStrainerwithEpoxyCoatingSingleWrapPerforatedElementPerforatedplaterolledintoacylinderandweldedtothehub,centerringandendweldTypicalSAorWDAStrainerElementPerforatedHoleSizes1/43/161/8(standard)3/321/16(doublewrap)3/16(doublewrap)WedgeWireScreenAssemblyAvailablein316StainlessSteel&MonelVariousslotsizesavailableWedgeWire316StainlessSteelSlotWidth.015-385micron.009-230micron.007-180micron.005-140micron.004-100micronDoubleWrapScreenAssembly1/4perforatedplaterolled&weldedtothehub,centerrings,andendplate1/16or1/32platerolled&silversolderedtotheaboveassemblyScraperBarEssentialtocleaningoperationMustbecorrectlyadjustedtocleanproperlyStandardmaterialismanganesebronzeScraperBrushEssentialtocleaningwedgewirescreensMustbecorrectlyadjustedtocleanproperlyStandardmaterialisstainlesssteelControlPanelCleaningCycleSequenceToinitiateacleaningcycle,asignalfromeitherthepressuredifferentialswitchortimerissenttothePICOcontrollerSimultaneously,theflushvalveopensandbothstrainerelements(DA&SAseries)begintorotateclockwiseTypicalflushcyclewilllast15-30secondsuntilthepressureswitchsensesthelowDPsetpoint(ortimerdurationexpires)OncethelowDPsetpointisreached,thestrainerelementsstoprotatingandtheflushvalveclosesElectricalComponentsofAutomaticStrainersScreenDriveMotorsAutomaticFlushValvePressureDifferentialSwitchControlPanelScreenDriveMotors1/3HP(standardforDAs