H41H上海升降式法兰止回阀

HH44X上海蝶式缓冲止回阀

HH44X上海微阻缓闭止回阀

HC41X上海消声止回阀

H42T/DRVZ上海*止回阀

HC44X/SFCV上海橡胶瓣止回阀

H77H/X/W上海蝶形对夹止回阀

H76W/H上海对夹蝶式双瓣止回阀

H71H/W上海升降式对夹止回阀

H44H上海旋启式法兰止回阀

H42H上海法兰式立式止回阀

H44W上海黄铜法兰止回阀