HH44H、HH44X微阻缓闭止回阀

300X型缓闭止回阀

HC44X橡胶瓣止回阀

HC41X消声止回阀

HC42X(DRVZ)*止回阀

HH46X、HH48X、HH49H微阻缓闭蝶式止回阀

DHH44H、HH47H微阻缓闭消声止回阀

HQ41X无磨损球形止回阀

HQ41X球形止回阀 污水止回阀 无磨损滑道滚球止回阀【重庆阀门】