HQ44X球形止回阀
HQ41X球形止回阀
HH49X-HH48X消声缓闭止回阀
HH47X蝶式缓冲止回阀
HH44X微阻缓闭止回阀
HC44X橡胶瓣止回阀
HC42X(DRVZ)静音止回阀
HC41X消声止回阀
H76X-H-Y-Y对夹蝶式止回阀
H74H-X-W超薄对夹式止回阀
H71H-X-F-W对夹升降式式止回阀
H44W不锈钢旋启式止回阀