常闭型软阀座，主体cac406，螺栓连接, 软圆盘（垫圈类o形圈），内部材质：c3604，c6191 交流普通 直流普通 交流防爆 直流防爆 螺纹连接 m30c-15-a44-bs11-tf m30c-15-d44-bs11-tf m30c-15-ae44-bs11 m30c-15-de44-bs11 m30c-20-a44-bs11-tf m30c-20-d44-bs11-tf m30c-20-ae44-bs11 m30c-20-de44-bs11 m30c-25-a44-bs11-tf m30c-25-d44-bs11-tf m30c-25-ae44-bs11 m30c-25-de44-bs11 m30c-32-a44-bs11-tf m30c-32-d44-bs11-tf m30c-32-ae44-bs11 m30c-32-de44-bs11 法兰连接 m30c-15-a44-bf11-tf m30c-15-d44-bf11-tf m30c-15-ae44-bf11 m30c-15-de44-bf11 m30c-20-a44-bf11-tf m30c-20-d44-bf11-tf m30c-20-ae44-bf11 m30c-20-de44-bf11 m30c-25-a44-bf11-tf m30c-25-d44-bf11-tf m30c-25-ae44-bf11 m30c-25-de44-bf11 m30c-32-a44-bf11-tf m30c-32-d44-bf11-tf m30c-32-ae44-bf11 m30c-32-de44-bf11 m30c-40-a44-bf11-tf m30c-40-d44-bf11-tf m30c-40-ae44-bf11 m30c-40-de44-bf11 m30c-50-a44-bf11-tf m30c-50-d44-bf11-tf m30c-50-ae44-bf11 m30c-50-de44-bf11 常闭型软阀座，主体cac406，螺栓连接, 金属圆盘（垫圈类o形圈），内部材质：c3604，c6191 交流普通 直流普通 交流防爆 直流防爆 螺纹连接 m30c-15-a44-bs21-tf m30c-15-d44-bs21-tf m30c-15-ae44-bs21 m30c-15-de44-bs21 m30c-20-a44-bs21-tf m30c-20-d44-bs21-tf m30c-20-ae44-bs21 m30c-20-de44-bs21 m30c-25-a44-bs21-tf m30c-25-d44-bs21-tf m30c-25-ae44-bs21 m30c-25-de44-bs21 m30c-32-a44-bs21-tf m30c-32-d44-bs21-tf m30c-32-ae44-bs21 m30c-32-de44-bs21 法兰连接 m30c-15-a44-bf21-tf m30c-15-d44-bf21-tf m30c-15-ae44-bf21 m30c-15-de44-bf21 m30c-20-a44-bf21-tf m30c-20-d44-bf21-tf m30c-20-ae44-bf21 m30c-20-de44-bf21 m30c-25-a44-bf21-tf m30c-25-d44-bf21-tf m30c-25-ae44-bf21 m30c-25-de44-bf21 m30c-32-a44-bf21-tf m30c-32-d44-bf21-tf m30c-32-ae44-bf21 m30c-32-de44-bf21 m30c-40-a66-bf21-tf m30c-40-d66-bf21-tf m30c-40-ae66-bf21 m30c-40-de66-bf21 m30c-50-a66-bf21-tf m30c-50-d66-bf21-tf m30c-50-ae66-bf21 m30c-50-de66-bf21