63SDL常数差流量控制器，63SDL63SDL常数差流量控制器简单介绍VersatileanddesignaccommodatesliquidsorgasesandwiderangeofOEMneedsPowdercoatingprovidesimprovedcorrosionresistance63SDL常数差流量控制器（C***tantDifferentialFlowControllers）的详细介绍Features&BenefitsVersatileanddesignaccommodatesliquidsorgasesandwiderangeofOEMneedsPowdercoatingprovidesimprovedcorrosionresistanceDescriptionTheSeries63SDLC***tant-DifferentialRelaysareusedinconjunctionwithanexternalneedlevalvetoprovidec***tantvolumeflowratesofliquidsorgasesoveracontinuouslyadjustablerange.Forgasflowapplicati***,compressibilitymustbec***ideredifac***tantmassflowisdesired.Therefore,modelsare***ailableforc***tantupstreamordownstreamreferencepressure.Forliquids,whicharenotcompressible,thec***tantvolumeflowwillalsobeac***tantmassflow,regardlessofupstreamordownstreampressures.Assuch,massflowisindependentofpressurechanges.Therelay’sneedlevalvedeterminesrangeabilityandcapacity.Fourmodelsare***ailable.)