EN ISO 3822-3:2018
聲學.由供水設施使用的儀器和設備發出噪音進行的實驗室試驗.第3部分:管線上用的管件的連接和操作條件
Acoustics - Laboratory tests on noise emission from appliances and equipment used in water supply installations - Part 3: Mounting and operating conditions for in-line valves and appliances