在一定压差范围内维持管道水系统的流量平衡，在工作压差范围内***控制管路流量。使系统时刻保持平衡，无需人工调节。每台阀门在出厂时已设定流量，主要由其阀芯决定。PREAR-Iseriesdynamicflowbalancingvalveregulatesflowwhenthesystempressurefluctuatesintheoperatingdifferentialpressurerange,itcankeepthepipeflowc***tantbydynamicallybalancingthechangeofpressure.Itsautomaticoperationcompletelydependsonsystemdifferentialpressure,maintainingthesystemflowc***tantly.Thefluxissetbeforedelivery,anditiscontrolledbythecore.特点：在工作压差范围内可准确控制管路流体流量，使整个系统时刻保持平衡，不会因为某一区域流量的变化而影响整个系统流量的稳定。能够有效防止流量过大而造成设备的损坏，提高设备的使用寿命和安全性。对如水泵、末端空气处理机组、制冷主机选型时能有效控制其富余容量，达到降低***、降低能耗的目的。Accuratelyregulatestheflowofeverybranchwhenthesystempressurefluctuatesintheoperatingdifferentialpressurerange.Itwon’tbechangedduetoanysinglebranchflux,whichensuresthefluxstabilityoftheentiresystem.***oidanydamageoccursduetoexcessflow,andthenensurethelifespanandsecurityofthevalve.Itcancutdowncostandc***umptionbycontrollingtheexcessflowtoinwaterpump,terminalairhandlingunit,air-conditioner,etc.材质Material阀体ValveBody黄铜Brass阀盖ValveDeck黄铜Brass阀芯Core铜合金CopperAlloy阀胆ValveLiner铜合金CopperAlloy密封圈SealingElement三元乙丙橡胶EPDM弹簧Spring不锈钢StainlessSteel密封不含石棉Asbestosisnotcontainedinsealing.技术数据TechnicalParameter公称压力NominalPressurePN2.5MPa***大试验压力Max.TestingPressure3.8MPa***大工作压差Max.OperatingDifferentialPressure0.6MPa（受噪音水平限制）(Limitedbythenoiselevel)介质温度MediumTemperatureRange-20-120゜C通径范围CaliberDN15-DN50连接形式Connection螺纹连接ThreadConnection适用介质ApplicableMedium水或乙二醇混合液体MixtureofWaterandEthyleneGlycol公称通径Caliber流量范围FlowRange（L/S）外形尺寸DimensionDHLTDN150.015-0.06801/2”94/1337755/71DN200.015-0.06803/4”94/1337755/71DN250.188-3.1541”94/1337755/71DN320.188-3.15411/4”126/16412380/91DN400.188-3.15411/2”126/16412380/91DN500.188-3.1542”126/16412380/91)