1.1本欧洲标准规定了球阀和闭式锥形旋塞阀的结构，性能和安全性。它还详细说明了测试方法和标记规定。 它适用于不直接埋置在建筑物内部或外部的家庭和商业设施的金属阀门，使用第一，第二和第三系列的气体（EN 437规定），并且工作高达0,2×105 Pa，0.5 Ã-105Pa，1×105Pa，5×105Pa和20×105Pa，温度范围为-5°C或-20°C至60°C。 注意在本标准的上下文中“不直接埋置”意味着地下的阀门不直接接触地球或其他材料，例如，他们在一个受保护的包装。 1.2本欧洲标准涵盖的阀门公称尺寸（DN）如下:6,8,10,12,15,20,25,32,40,50,65,80,100

1.1 This European Standard specifies the characteristics for the construction, performance and safety of ball valves and closed bottom taper plug valves. It also details the test methods and marking provisions. It applies to metallic valves not directly buried for domestic and commercial installations inside or outside of buildings, using gases of the first, second and third family (specified in EN 437) and working up to 0,2 × 105 Pa, 0,5 × 105 Pa, 1 × 105Pa, 5 × 105 Pa and 20 × 105Pa and with temperature limits from -5 °C or −20 °C to + 60 °C. NOTE "Not directly buried" within the context of this standard means that valves below ground are not in direct contact with earth or other materials e.g. that they are in a protected encasement. 1.2 Valve nominal sizes (DN) covered by this European Standard are as follows: 6, 8, 10, 12, 15, 20, 25, 32, 40, 50, 65, 80, 100.