进口缓闭式止回阀美国力沃阀门进口止回阀300X（HH741X）缓闭式止回阀上海沪江阀门厂广州销售处【产品用途】300X（HH741X）型PN10~PN25缓闭式止回阀具有开启和关闭速度调控的逆止功能，阀门安装后能有效控制水泵在启动与停止运转时会自动调节到***佳开启与关闭的速度。适用于矿企业、高层建筑由水泵直接给排水系统中，减小水锤及水击现象产生，以达到安全关闭的效果。【性能参数】型号HH741X-10HH741X-16HH741X-25工作压力（MPa）1.01.62.5适用温度（℃）0～80适用介质水材料阀体、阀盖铸铁阀杆铬不锈钢阀座、阀盘青铜膜片丁晴橡胶主要外形和连接尺寸公称口径DN主要外形尺寸和连接尺寸（mm）LWW1HH1FBY200X-10BY200X-16BY200X-25201802822201721061162518028222017210611632180282220172106116402403202102652101705024032021026521017065250330215310215180802853502203502452101003604102304603052751254004202455203653101504554302605704153552005854402806955104602506504503007805605003008004603209056585803508604703401025696640400960480360108073571545010755303951030610780500107558042011356658306001230600445127072592070016507304951460865980800175083053016409251050145X电动遥控阀YX741X可调式减压稳压阀JD745X多功能水泵控制阀JH745X水力自动控制阀800X压差旁通平衡阀200X型减压阀106X电磁遥控浮球阀600X（J241X）型水力电动控制阀100X型遥控浮球阀300X（HH741X）缓闭式止回阀400X（L741X）流量控制阀500X（A742X）泄压持压阀700X水泵控制阀DJ900X紧急关闭阀BD100D-10、BD400D-16、BD400D-25型定水位阀)