H44X-10S塑料止回阀

H83H/Y卡箍角式止回阀

H77H对夹止回阀

H48Y H48H空排止回阀

H42H/W/Y立式止回阀

H40F46衬氟升降式止回阀

H14W内螺纹旋启式止回阀

H12H立式内螺纹止回阀

H44F46旋启式衬氟止回阀

H42X底阀

H41H/W升降式止回阀

Z41T明杆铸铁闸阀