EN ISO 3822-3:2018
声学.由供水设施使用的仪器和设备发出噪音进行的实验室试验.第3部分:管线上用的管件的连接和操作条件
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