HH44X微阻缓闭止回阀一、用途及特点微阻缓闭止回阀用于给排水管道,安装在水泵出口处用来防止介质逆流和消除***性水锤,并能有效地减少阀门关闭水锤压力,可保障管网安全运行.它具有阀瓣轻、开度大、节电效果显著，流体阻力小，水锤消除机构设计新颖，密封性能稳定可靠、耐磨损、使用寿命长、运行平稳、无振动、无噪声等特点。二、主要零部件材料零件名称阀体、阀盖阀瓣阀轴材料灰铸铁橡胶组合件不锈钢三、主要外形尺寸通径40506580100125150200250300350400450500600700800L20023029031035040048050060070080090010001100130014001500H3003003203543503805005806707308209209501100120015501700B22027029030032034041045055058063070080090099011201300相关止回阀产品系列:H41X/W-16P不锈钢消声止回阀H41H/W升降式止回阀H42H/W立式止回阀HH47X/HH48X/HH49X微阻缓闭蝶型消声止回阀HH44X微阻缓闭止回阀H71H/W对夹升降式止回阀（全铜)H71H/W对夹升降式止回阀H74Ⅱ型对夹薄型止回阀H76X对夹蝶型旋启式止回阀H41X/W全铜消声止回阀H***4X-10-16橡胶瓣止回阀H44H/W旋启式止回阀H76H/W对夹蝶型止回阀（双瓣式)H42X底阀H41X/W消声止回阀（铁壳铜芯）HQ41X球形止回阀（无磨损球形止回阀)HQ45X型微阻球形止回阀H42H/W不锈钢法兰立式止回阀H14W-16P/R不锈钢螺纹旋启式止回阀H61Y型高压升降式止回阀H42T型（DRVZ）静音止回阀H41W型不锈钢升降式止回阀H12W-16P/R不锈钢丝口止回阀H12W-16T黄铜丝口止回阀H74Ⅰ型对夹薄型止回阀)