气管阀 产品编号 41231000 EAN编码 4005176280313 颜色 镀铬 下载规格 Product main features with safety unit type HD (pipe ventilating valve combined with non-return valve) 垂直安装 for intrinsic safety against backflow according to DIN 1988.100 and DIN EN 1717 Technical Product Information 尺寸图 CAD数据 3D 图形交换格式-数据
