API 608-2008 国外阀门标准 (美国石油协会标准) 相关标准汇编 法兰、螺纹和焊连接的金属球阀 2008 年 12 月 第四版 生效日期：2009 年 6 月 目录 页数 引 言 .........................................................vii 1 范围 ...........................................................1 2 引用标准 .......................................................1 3 术语和定义 .....................................................2 4 压力-温度额定值 ................................................3 4.1 阀门额定值 ...................................................3 4.2 壳体额定值 ...................................................3 4.3 阀座额定值 ...................................................3 5 设计 ...........................................................4 5.1 概述 .........................................................4 5.2 阀体通道.... .................................................4 5.3 阀体 .........................................................4 5.4 防静电设计 ...................................................4 5.5 球体和阀杆 ...................................................6 5.6 球体 .........................................................6 5.7 填料压盖及栓接 ...............................................6 5.8 操作 .........................................................6 5.9 法兰面间隙 ...................................................7 5.10 阀门壳体连接 ................................................7 6. 材料 ..........................................................8 6.1 壳体 .........................................................8 6.2 阀体内件 .....................................................8 6.3 栓接 .........................................................8 6.4 密封性 .......................................................8 6.5 铭牌 .........................................................9 6.6 管螺纹螺塞 ...................................................
