热塑性塑料分集水器 Water distribution and collection devices of thermoplastics materials  ICS  83.140.30 CCS  G 33   中华人民共和国国家标准 GB/T 44579—2024 2024-09-2 9发布 2025-04-0 1实施     国家市场监督管理总局 国家标准化管理委员会 发 布 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     符号和缩略语   ·························································································   2      4.1     符号   ······························································································   2      4.2     缩略语   ···························································································   2 5     材料和部件   ···························································································   3      5.1     分集水器   ·························································································   3      5.2     阀门   ······························································································   3      5.3     密封件   ···························································································   3 6     设计   ··································································································   3 7     要求   ··································································································   4      7.1     外观   ······························································································   4      7.2     颜色   ······························································································   4      7.3     尺寸   ······························································································   4      7.4     静液压强度   ······················································································   5      7.5     分集水器物理力学性能   ··········································································   6      7.6     组合件密封性   ····················································································   7      7.7     水力平衡性能   ····················································································   7      7.8     透光率   ···························································································   7      7.9     卫生要求   ·························································································   7      7.10     热循环试验   ·····················································································   7      7.11     耐拉拔试验   ·····················································································   8 8     试验方法   ······························································································   8      8.1     状态调节   ·························································································   8      8.2     外观及颜色   ······················································································   8      8.3     尺寸   ······························································································   8      8.4     静液压强度   ······················································································   8      8.5     熔体质量流动速率变化率   ········································································   8      8.6     氧化诱导时间   ····················································································   8      8.7     灰分   ······························································································   8      8.8     密度   ······························································································   8      8.9     维卡软化温度   ···············································