H44H旋启式止回阀,不锈钢止回阀

HQ45X微阻球形止回阀

HQ44X微阻球形止回阀

HH46X、HH48X、HH49X微阻缓闭止回阀

HH44X微阻缓闭止回阀,铸铁止回阀

H11H/H61H锻钢止回阀

H72Y对夹式高压止回阀,锻钢止回阀

175H48Y/H空排止回阀

H44F46旋启式衬氟止回阀

H41F46升降式衬氟止回阀

H41X全铜消声止回阀

H11W不锈钢升降式内螺纹止回阀