ICS91.140.60 CCSP42DB4419 东莞市地方标准 DB4419/T25—2025 居民住宅二次供水工程技术管理规范 Residentialsecondarywatersupplyengineeringtechnologymanagement specification 2025-01-20发布 2025-02-05实施 东莞市市场监督管理局发布 DB4419/T25—2025 I目  次 前言.....................................................................................................................................................................III 1范围.................................................................................................................................................................1 2规范性引用文件............................................................................................................................................1 3术语和定义....................................................................................................................................................2 4总体原则........................................................................................................................................................3 5水质、水量、水压........................................................................................................................................4 5.1水质..........................................................................................................................................................4 5.2水量..........................................................................................................................................................4 5.3水压..........................................................................................................................................................4 6系统设计........................................................................................................................................................5 6.1一般规定.................................................................................................................................................5 6.2系统选择.................................................................................................................................................5 6.3流量与压力.............................................................................................................................................6 6.4管道布置.................................................................................................................................................6 7设备与设施....................................................................................................................................................7 7.1水池（箱）.............................................................................................................................................7 7.2压力水容器.............................................................................................................................................8 7.3水泵及配套电机.....................................................................................................................................8 7.4叠压供水设备.........................................................................................................................................9 7.5消毒设备...............................................................................................................................................10 7.6管道和附件...........................................................................................................................................10 7.7数字一体化供水设备...........................................................................................................................13 8泵房...............................................................................................................................................................13 8.1一般规定...............................................................................................................................................13 8.2环境要求..........................................................................