200X减压阀结构特点和用途减压阀200X减压稳压阀由主阀、导阀、针阀、球阀、微型过滤器和压力表组成水力控制接管系统。使用时减压阀，当调定出口压力后，能自动保持稳定出口压力。本产品利用导阀自力控制减压阀，不需要其它装置和能源，保养简便，压力控制准确度高，受进口压力和流量影响小，减压稳压可靠。本系列阀门产品广泛用于高层建筑、生活区等供水管网系统及城市供水工程减压阀。工作原理当阀门从进口端给水时减压阀，水流过针阀进入主阀控制室，出口压力通过导管作用到导阀上。当出口压力高于导阀弹簧设定值时，导阀关闭。控制室停止排水，此时主阀控制室内压力升高并关闭主阀，出口压力不再升高。当阀门出口压力降到导阀弹簧设定压力时减压阀，导阀开启，控制室向下游排水。由于导阀系统排水量大于针阀的进水量，主阀控制室压力下降。进口压力使主阀开启。在稳定状态下，控制室进水、排水相同，主阀开度不变，出口压力稳定。调节导阀弹簧即可设定出口压力减压阀。主要技术参数公称压(Mpa)壳体试验压力(MPa)密封试验压力(MPa)最高进口压力(MPa)出口可调压力(MPa)适用介质介质温度(℃)1.01.51.11.00.09-0.8水0-801.62.41.761.60.10-1.22.53.752.752.50.15-1.6主要零件材料零件名称零件材料阀体 阀盖WCB阀座 阀盘铜合金密封圈 O型圈丁腈橡胶阀杆2Cr13弹簧50CrVA针型阀铜合金球阀铜合金浮球阀铜合金微型过滤器不锈钢部件列表：1、导阀2、主阀3、球阀4、压力表5、针表减压阀连接尺寸DNLAA1HH1FDmmD1mmD2mmn-ΦdmmmmmmmmmmmmPN1.0PN1.6PN2.5PN1.0PN1.6PN2.5PN1.0PN1.6PN2.5PN1.0PN1.6PN2.5201802921363422471161051051057575755858564-13.54-13.54-14251802921363422471161151151158585856868654-13.54-13.54-14321802921363422471161401401401001001007878764-17.54-17.54-18402403301553952781701501501501101101108888844-17.54-17.54-1850240330155395278170165165165125125125102102994-17.54-17.54-18652503501654052981801851851851451451451221221184-17.54-17.58-18802853651754303132102002002001601601601331331328-17.58-17.58-181003604101955103502752202202351801801901581581568-17.58-17.58-221254004552205603653102502502702102102201841841848-17.58-17.58-261504554752305854203552852853002402402502122122118-228-228-262005855302556754504603403403602952953102682682748-2212-2212-2625065062330073047050039540542535035537032032033012-2212-2612-3030080070034076049058044546048540041043037037038912-2212-2616-3035086084041584052664050552055546047049043043044816-2216-2616-3340096088043091057071556558062051552555048248250316-2616-3016-364501075930460103061078061564067056558560053255054820-2620-3020-365001075980490113566583067071576062065066058558560920-2620-3320-3660012301060530127072592078084084572577077068568572020-3020-3620-3970016501130560146086598089591096084084087580080082024-3024-3624-42800175012306101640975105010151025108595095099090590592824-3324-3924-48安装示意图