VMNC气动隔膜阀

VM/NCValvolaamembranaacomandopneumatico,NCPneumaticallyactuateddiaphragmvalve,NCDimensionisecondoISO-BS-ASTMLaVM/NCèunavalvoladotatadiunattuatoreamembranachenonrichiedemanutenzioneechepuòvenircomandatodaqualunquefluido,purchéneutroepulito.Ilvantaggiodellavalvolaamem-branarispettoadaltrisistemièlasemplicitàdifunzionamentounitamentealdesigncompatto.Puòveniremontatainqualsiasiposizionee,grazieallamembrana,vengonoridottialminimoirischidicolpod'ariete.Invirtùdell'ampiadisponibilitàdimaterialiperilcorpovalvolaeperlamembrana,laVM/CPhaunampiospettroapplicativo.Laspecia-lemembranainfibratessiledell'attuatore,permettediaprire/chiuderefinoa106voltesenzamostraresegnidiusura.PECULIARITÀ'-Grandeportata,basseperditedicarico-costruzionecompatta,massacontenuta-con3grandezzedimembranasicoprono6DN-possibilitàdiallinearesulme-desimoassedicentrotubotuttiicorpivalvoladalDN15alDN50-possibilemontaggiodiqual-siasiaccessorioainstallazionegiàavvenuta-facilesostituzionedellamem-branaditenutaACCESSORILavalvolapuòesseredotatadeiseguentiaccessori:-Limitatoredicorsa.-Limitatoredicorsaconindica-torevisivodiposizione.-Limitatoredicorsaconindica-torediposizioneecomandomanualediemergenza.-Indicatorevisivodiposizione.-Microinterruttorielettromec-canicidifinecorsa-Microinterruttoriinduttivi(proximity)difinecorsa-Posizionatoreelettropneumatico-Elettrovalvolapilota3/2viepermontaggiodirettooinbatteria.SizesaccordingtoISO-BS-ASTMThediaphragmvalvetypeVM/NCisequippedwithamaintenancefreeactuator,whichcanbeoperatedwithanyinertliquidorgas.Thevalveisnormallyclosedandis,,openedbythecontrolmedia.Theadvantageofthediaphragmvalves,againstothertypesofvalves,consistsofsimplicityinfunctionandcompactdesign.Thevalvehasdefiniteadvantageswhencontaminatedorabrasivemediahavetobecontrolled.Itcanbemountedinanyposition.Waterhammerriskisreducedwiththisvalve.Utilisingthevariousavailablebodyanddiaphragmcombinations,,thevalvehasawiderangeofapplications.Theflat,clothreinforced,neoprenecontroldiaphragmshowslittlewearandtearafter106dutycycles.CHARACTERISTICS-HighKvvalue,reducedpres-surelosses-compactandsturdyconstruc-tion,lessweight-groupedsizes,3diaphragmsizesfor6sizesofvalvebody-possiblealignmentofallvalvebodiesDN15÷50atthesameheightfromtheground,.-mountingofanyaccessoryispossible,evenafterinstallation-easyreplacementofthesea-lingdiaphragmACCESSORIESThevalvecanbeequippedwith:-strokelimiter-strokelimiterwithopticalPo-sitionindicator-strokelimiterwithopticalPositionindicatorandemergencymanualoverride-opticalpositionindicator-electromechanicallimit-switches-inductive(proximity)limit-switches-electropneumaticpositioner-directorgangmounting3/2waypilotsolenoidvalve1ISO-BS-ASTMVM/NC••••••••DN15-50NCKv361VM/NCLEGENDAddiametronominaleesternodeltuboinmmDNdiametronominaleinternoinmmPNpressionenominaleinbar(pressionemaxdiesercizioa20°Cinacqua)gpesoingrammiUnumerodeiforisspessoretuboinmmPVCclorurodipolivinilerigidoPP-HpolipropileneomopolimeroPVC-CclorurodipolivinilesurcloratoPVDFpolifluorurodivinilideneABSacrilonitrilebutadienestireneEPDMelastomeroetilenepropileneFPMfluoroelastomeroPTFEpolitetrafluoroetilenePBTpolibutilenetereftalatoPEpolietilenednominaloutsidediameterofthepipeinmmDNnominalinternaldiameterinmmPNnominalpressureinbar(max.workingpressureat20°C-water)gweightingramsUnumberofholesswallthickness,mmPVCunplasticizedpolyvinylchloridePP-HpolypropylenehomopolymerPVC-CchlorinatedpolyvinylchloridePVDFpolyvinylidenefluorideABSacrylonitrile-butadiene-styreneEPDMethylenepropylenerubberFPMvinylidenefluoriderubberPTFEpolytetrafluoroethylenePBTpolybutyleneterephtalatePEpolyethylenedDNPNgUsPVCPP-HPVC-CPVDFABSEPDMFPMPTFEPBTPEkv100CoefficientediflussoPercoefficientediflussokv100siintendelaportataQinlitrialminutodiacquaa20°Cchegeneraunaperditadicarico∆p=1barperunadeterminataposizionedellavalvola.Ivalorikv100indicatiintabellasiintendonopervalvolacompletamenteaperta.kv100Flowcoefficientkv100isthenumberoflitresperminuteofwateratatemperatureof20°Cthatwillflowthroughthevalvewith∆p=1bardifferential-pressureataspecifiedposition.Thekv100valuesshowninthetablearecalculatedwiththevalvecompletelyopen.220°C50()kv100kv10020°Ckv100(mm)(mm)1VM/NCDatiTecniciTechnicalData1-40-20020406080100120140°Cbartemperaturadiesercizio-workingtemperaturetempératuredeservice-Betriebstemperaturpressiondeservice-Betriebsdruckpressionediesercizio-workingpressure0161412846210PVDFPVC-CPPPVCDN15÷50DN65÷100423d2025324050637590110DN1520253240506580100kv10093136175300416766130020002700Pressionediesercizio–WorkingPressure-Pressiondeservice-Betriebsdruckmax10bar(DN15÷50)max6bar(DN65÷100)Pressionedicomando–Controlpressure–Pressiondecommande-Steuerdruckmax6barFunzionedicomando–Controlfunction–Fonctiondecommande-SteuerfunktionNCTemperaturadelfluidodicomando*-Controlfluidtemperature*–Températuredelefluiddecommande*-TemperaturdesSteuermediums*Max40°CCapacitàattuatore–Actuatorcapacity–Capacitèactionneur–SteuervolumenDN15-25=0.16NLDN32-40=0.36NLDN50=1.15NLDN65-80=2.1NLMaterialedellamembranaditenuta–Diaphragmmaterial–Matèriauxdelamembrane–Membra