ASH Type E Material Handling Valve (New)

(2)AllenShermanHoffFlyAshandBedAshHandlingValve Valvesarenew Allen-Sherman-Hoff'sType"E"MaterialHandlingValveisafeedingdeviceforvacuumconveyingsystems.Thevalvefeedsflyashfromhopperoutletsofelectrostaticprecipitators,baghouses,economizersorotherashcollectingsystemsintoaconveyingline.Theslidegatedesignprovidesapositivegateandseatseal.Thevalvehastwoaccesspointsforeasymaintenanceandaccessibility.Theoperatingmechanismisanair-electric,remoteoperatedcylinder. ApplicationsTheA-S-HType“E”MaterialHandlingValveuniformlyfeedsflyashintoadilutephase,vacuumconveyingsystem.Thevalvedesignallowsallflyashcontainedinahoppertoself-regulateintotheconveyingline.Thevalvethenclosesandthecyclerepeatsonthenextvalveintheline.Typically,thesevalvesareusedatthehopperoutletofelectrostaticprecipitators,baghouses,economizers,orotherflyashcollectingsystems.  FeaturesConfigurationTypeEvalvesareavailableineitheraright-orlefthandorientation.Appropriateselectionisvitaltopreventcylinderinterferencewithdischargepiping.Valveinletcanbesuppliedeithercenterlineorstraddlecenterlinedependingonthehopperoutletflangeconfiguration.SlideGateHousingAssemblyThestainlesssteelslidegateisolatesthevacuumconveyingsystemfromthestoragehopper.Theslidegateismachinefinishedtoensureaflatseatingsurfacewhichreducesthetendencyofdampmaterialtoadheretothegate,andhassharpedgestoscrapeoffmaterialadheringtotheseatfaceorguidetracks.Itfloatsbetweentheseatandguidetracks,onastainlesssteeldrivepin,sothatthevacuumoffthetransportlinepullstheslidegatetightlyagainsttheseat.Thevalveseatismadeofhardenedductileiron,givingitbothlowfrictionqualitiesofnodularironanddesiredwearresistanceofhighBrinellmetal.  BodyThecastironbodydesigneliminatescavitiesordeadspacesateachendofthesliderange.Thisreducesthetendencytotrapashordustthatcancakeandpreventafullstrokeoftheslidegate.Thebodyiscastintwopiecesthatareflangedtogether,toaccommodatecustomers’inletandconfigurationneedsandreducereplacementcost.AirInletCheckValvesCastironvalvesareupstreamoftheslidegateassembly,ateachsideoftheoutlet.Theyassistinreducingbuildupofmaterialintheslidepathduetothehighvelocityairflowbetweenthevalvesandthetransportline.Byadmittingcontrolledamountsoftransportairatthepointofmaterialpickup,thefeedrateiscontinuousandcommensuratewiththesystem’scapacity.Atensionspringallowsforfieldadjustmentofthefeedratewithoutoverloading.InletandOutletSizesValvebodiesareavailableinvariouscombinationsofinletandoutletsizestosuitcustomerneedsandapplications.Theinletisavailablewithan8”(203mm)or12”(305mm)flangeandtheoutletwitha4”(102mm),5”(127mm)or6”(152mm)plainendpiecewhichconnectsbyacouplingtoourstandard,plainendpipeorfittings.  MaintenanceAccessibilityThevalvehastwoaccesspoints:athreadedportinthebaseofthebodydirectlybeneaththeinlet;andaboltedaccesscoverattherearofthebody,oppositetheoutlet.Thethreadedportactsasadrainwhenrinsinghoppersduringplannedoutages.Therearaccesscoverenablesremovaloftrampironorlumpedmaterialintheeventofvalvepluggage.OperatingMechanismThestandardoperatingmechanismisanair-electric,remoteoperatedcylinder.Thisconsistsofadoubleactingair-cylinder,designedforairpressuresbetween80-125psi(5.6-8.8kg/cm2)anda4-waysolenoidcontrolvalvewithmanualoverride.Themanualoverridepermitslocaloperationofthevalve.Anopen-bottomedadaptorsectionconnectsthecylindertothevalvebody,thusisolatingthecylinderfromproblemsassociatedwithdustandfluegas.Manuallyoperateddesignsarealsoavailabletofulfillcustomerneeds.  OptionsGateandSeatReplacementsandUpgradesThreereadilyinterchangeable“MaintenanceKit”optionsareavailabletosuitcustomers’varyingwearandbudgetrequirements.Eachkitincludesallthetypicalpartsneededtoreplacein-kind,orupgradeyourgateandseat,thusensuringeaseofsubstitution.•Stainlesssteelgateandductileironseat-Thesematerialsareourstandardoffering.Theydisplayexcellentlifeandwearcharacteristicsonmostflyashapplications.•Ceramic-Werecommendthisproductforhighlyabrasiveashhandlingapplications.Thebenefitsofceramicsincludeexcellentabrasionandimpactresistance,aswellasthecapabilitytowithstandhightemperatures.Thecarbonsteelgatehasaceramicoverlay.Theseatismachinedtoincorporatetheceramicinlay.•TungstenCarbide-Thisproductoffersimprovedwearresistanceoverourstandardoffering.TheTungstenCarbidegateismachinefinishedtoreduceashadherence.TheseathasaTungstenCarbidesleeveandring.Theringisadheredtotheinletside.  DeflectorTubesThisoptionincreasesthelifeofthegateandseat.Itisessentiallyasacrificialpartinsertedinsidethevalvebodytodeflectashfromthegateandseat.Thislowcostproductisrecommendedwhenoptimalsystemcapacityisnotrequired.Thetubeismadeofzcastiron.MeteringSleevesThisproductcontrolstheflowrateofveryfluidashesthroughthevalve.Thevalvebodyhousesthesleevethatisadjustablebyanexternallevertometerthethroughput.