DVO4R-B5-H-50,DVO4R-B5-H-65,DVO4R-B5-H-80,DVO4R-B5-H-100,气动法兰式硬密封蝶阀

DVO4R-B5-H-125,DVO4R-B5-H-150,DVO4R-B5-H-200,DVO4R-B5-H-250,DVO4R-B5-H-300,DVO4R-B5-H-350,
DVO4R-B5-H-400,DVO4R-B5-H-450,DVO4R-B5-H-500,DVO4R-B5-H-600,DVO4R-B5-H-700,DVO4R-B5-H-800,
DVO4R-B5-H-900,DVO4R-B5-H-1000,DVO4R-B5-H-1200,