EN 13786-2004 丁烷,丙烷或它们的混合物用最大输出压力4巴及以下和100 kg/h及以下容积的自动转换阀及其相关安全设备.包含修改件A1-2008
Automatic change-over valves having a maximum outlet pressure of up to and including 4 bar with a capacity of up to and including 100 kg/h, and their associated safety devices for butane, propane or their mixtures (Incorporates Amendment A1: 2008; Remains