500X泄压持压阀500X泄压/持压阀由主阀、泄压/持压导阀针阀、球阀、微形过滤器和压力表组成水力控制接管系统。利用水力自动操作，即可以作泄压阀用又可作持压阀用。作泄压阀用时，可维持供水路压力在设定的安全值之下；做持压阀用，可维持主阀上游水压在设定值之上，保持主阀上游供水压力。本产品利用水力自力控制，不需要其它装置和能源，保养简便，一阀多用。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。工作原理1、作泄压阀：当泄压/持压导阀调整为泄压状态时，水通过针阀、主阀控制室、球阀A、泄压/持压导阀、球阀B流向出口，此时主阀处于开启状态。当进口压力超过泄压/持压导阀设定的安全值时，泄压导阀会自动开启，通过球阀C放出部分水，使管路泄压。当压力恢复到安全值时，泄压阀自动关闭。作泄压阀时，各球阀常开。2、作持压阀：当泄压/持压导阀调整为持压状态时，只要主阀进口水压低于导阀设定值，导阀即关闭。主要控制室升压，主阀关闭。当主阀上游供水压力超过导阀设定压力时，持压导阀才能打开，控制室的水经球阀排至出口，控制室降压主阀开启，开始供水，即保持了上游水压。作持压阀用时，球阀C常闭或用丝堵换下。主要技术参数公称压(Mpa)壳体试验压力(MPa)密封试验压力(MPa)适用介质介质温度(℃)1.01.51.1水0-801.62.41.762.53.752.75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、针阀3、球阀4、主阀5、压力表连接尺寸DNLAA1HH1FDmmD1mmD2mmn-ΦdmmmmmmmmmmmmPN1.0PN1.6PN2.5PN1.0PN1.6PN2.5PN1.0PN1.6PN2.5PN1.0PN1.6PN2.5201803301305504601161051051057575755858564-13.54-13.54-14251803301305504601161151151158585856868654-13.54-13.54-14321803301305504601161401401401001001007878764-17.54-17.54-18402403451356105161701501501501101101108888844-17.54-17.54-1850240345135610516170165165165125125125102102994-17.54-17.54-18652503551406255201801851851851451451451221221184-17.54-17.58-18802853601466455382102002002001601601601331331328-17.58-17.58-181003604001567505962752202202351801801901581581568-17.58-17.58-221254004201708086553102502502702102102201841841848-17.58-17.58-261504554351868647103552852853002402402502122122118-228-228-2620058548020611358054603403403602952953102682682748-2212-2212-26250650530226118585550039540542535035537032032033012-2212-2612-30300800575246132595558044546048540041043037037038912-2212-2616-30350860620275138599064050552055546047049043043044816-2216-2616-334009606352861445103071556558062051552555048248250316-2616-3016-364501075665320132590578061564067056558560053255054820-2620-3020-365001075695348143096083067071573062065066058558560920-2620-3320-3660012307203721565102092078084084572577077068568572020-3020-3620-3970016507704221755116098089591096084084087580080082024-3024-3624-42800175080545822301515105010151025108595095099090590592824-3324-3924-48)