对夹不锈钢单向阀H74W-PN16不锈钢对夹旋启式止回阀，H74W-PN25铸钢对夹止回阀

碳钢对夹单向阀H71W-PN16铸钢对夹升降式止回阀，H71W-PN25不锈钢对夹止回阀

美标摇版法兰单向阀H44W不锈钢旋启式美标止回阀，H44W-150LB美标止回阀

H44H-16C铸钢止回阀H44H铸钢旋启式止回阀，铸钢摇版法兰单向阀

H44H-300LB美标止回阀H44H-300LB旋启式美标止回阀，美标摇版单向阀

美标铸钢单向阀H44H旋启式美标高压止回阀，H44H-150LB美标法兰止回阀

不锈钢法兰单向阀H44H国标不锈钢旋启式止回阀，H44H-16P摇版止回阀

H44H-64C铸钢止回阀H44H-64C铸钢高压法兰止回阀，美标高压单向阀

不锈钢法兰止回阀H41W不锈钢升降式止回阀，H41W-PN16不锈钢止回阀

铸钢法兰止回阀H41H铸钢升降式止回阀，H41H-PN16铸钢法兰止回阀

H14W丝口摇版止回阀H14W旋启式止回阀，不锈钢摇版单向阀

立式法兰止回阀H12W立式丝口止回阀，304不锈钢单向阀