H76H对夹蝶形止回阀

H44H旋启式钢制止回阀

日标铸钢法兰止回阀

铸钢对夹蝶式止回阀

H74H不锈钢对夹圆型止回阀

H40J衬胶浮球式止回阀

H44F46衬氟旋启式止回阀

HH44X微阻缓闭止回阀,缓闭止回阀

HH46X,HDH48X,HH49X微阻缓闭消声止回阀

H41X消声止回阀

HQ45X微阻球形止回阀,球形止回阀

H61Y电站升降式止回阀