本标准规定了恒温混合水龙头的设计、施工、测试性能和符合性要求—（a）在供水温度不超过90°C的情况下与热水一起使用；（b） 用于工作压力不超过1400 kPa的热水和冷水；以及（c）标称尺寸不大于DN 20的管道。

This Standard specifies requirements for the design, construction, testing performance and means of compliance for thermostatic mixing taps- (a)for use with heated water at a supply temperature not exceeding 90°C; (b)for use with hot and cold water with working pressures not exceeding 1400 kPa; and (c)of nominal sizes not larger than DN 20.