蝶式止回阀、微阻缓闭止回阀HH44、HH46、HH48、HH49。球形止回阀HQ41X、HQ44X、HQ45X。天燃气止回阀、液化***止回阀H41/42N。保温止回阀BH44H、BH41H。截止止回多功能阀H48H。衬胶止回阀H44J/H41J/H40J、衬氟止回阀H41F/H44F/H42F/H40F。塑料止回阀H41F/H44F/H61F-6S。燃气限流阀H145。支耳式止回阀。铸铁止回阀、黄铜止回阀、铸钢止回阀、锻钢止回阀、不锈钢止回阀、铬钼钢止回阀、铬钼钒钢止回阀。底阀H42H、水上式底阀、拍门等系列产品。)