Multi-stage Pressure Control Valve
Multi-stagePressureControlValve
Size:1-1/2～12”(DN40~DN300）
PressureRating：150～2500LB(PN16~PN420)BodyMaterials：CarbonSteel,StainlessSteel,AlloySteel,DuplexSteelOperation:Pneumaticdiaphragmactuator、Pneumaticpistonactuator、Electricactuator
MPCseriesMulti-stagepressurecontrolvalveutilizesmulti-cagetoreducethepressure.IthasfeaturesofS-shapepassagewayandhighCv.Thevalveplugisdesignedasbalancingstructure,soitcanadjusttheflowstableandhasexcellentanti-differentialpressurecapability.Accordingtodifferentdifferentialpressure,itcanbedesignedwith1to3stagecagetoavoidthegenerationofflashingandcavitationeffectively,idealforservicesofhighgasorliquiddifferentialpressure,flashingandcavitation.
DesignFeature
–Strongflowcapacity–Largeguidingareaforstablemovement–Wideadjustablerangeandhighadjustingprecise–Idealforservicewithhighdifferentialpressure–Lowsealingresistancewithexcellentsealing–Multi-stagecagedesignavoidingcavitationandflashingappearance–Modularizedintegralstructuredesignforeasyinter-changeable–Idealforcontrollingflowofvariouspressureandtemperature
PrincipleofOperation
Theprocessmediumflowsthroughthevalveinthedirectionindicatedbythearrowonthebody.Thepositionofthe3-stageor5-stagevalveplugdeterminesthefreeareabetweenthevalveseatsandplugsandhencethepressuredroporflowratethroughthevalve.Thepressuredropoccursinstagessothatcriticaloperatingconditionslikecavitation,excessivewearandhighnoiseemissionsareavoided.Additionally,theplugstemisbottom-guidedforaddedstabilityandtolimitvibrations.Apressure-balancedversioncanbeusedwithhighdifferentialpressureswheretheforceproducedbytheactuatorintheunbalancedversionwouldbeinsufficienttoclosethevalve.Thevalvescanalsobeequippedwithflowdividerstofurtherreducethenoiselevel.
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