旋启式止回阀H44W-16C
不锈钢旋启式止回阀H44W-16P
升降式止回阀H41W-16P
美标止回阀H44W-16P
立式止回阀H42W-16P
国标旋启式止回阀H44W-16P
国标铸钢旋启式止回阀H44W-16C
国标升降式止回阀H41W-16C
铸钢美标止回阀H41H-16C