ISO 3822-3:2018规定了测量水流产生的噪声排放时，用于控制供水装置中水的流量、压力或温度的在线阀门和装置的安装和操作条件。 ISO 3822-3:2018适用于最大公称尺寸DN 32的直列阀门和器具，以及最大水流量不超过1.6 l/s的系统。 注:见ISO 6708；DN是“公称尺寸”的符号。标称尺寸的数量与英寸的内径（单位:毫米）密切相关- 阀门和器具。 所述程序适用于常规设计的所有类型的直列式阀门。

ISO 3822-3:2018 specifies the mounting and operating conditions to be used for in-line valves and appliances which control the flow, pressure or temperature of the water in water supply installations, when measuring noise emission resulting from water flow. ISO 3822-3:2018 is applicable to in-line valves and appliances of maximum nominal size DN 32 and to systems in which the maximum water flow rate does not exceed 1,6 l/s. NOTE See ISO 6708; DN is the symbol for "nominal size". The number of the nominal size is loosely related to the inside diameter (in millimetres) of the in-tine valves and appliances. The procedures described are for general use for all types of in-line valves of conventional design.