UL 555：Fire Dampers
UL 555：防火阀
UL 555防火阀 – 适用范围
本标准适应于预计安装在这些地方的防火阀，如穿墙或埋入墙体、隔板开口处的管道、隔墙的空气输送开口处以及美国国家防火协会(NFPA)在《空调和通风系统安装标准90A》中提到的延伸穿过地板的管道。防火阀必须按照规范安装，如官方建筑师与规范管理人员协会( Building Officials and Code AdministratorsBOCA)国家机械器具条款、南方建筑物规范国际协商会(Southern Building Code Conference InternationalSBCCI)标准机械条款、商业机会互通理事会(Interracial Council for Business Opportunities ICBO)统一机械条款以及国际机械器具条款等装设标准来使用。
The fire dampers covered by these requirements are intended for installation in accordance with the National Fire Protection Association Standard for Installation of Air-Conditioning and Ventilating Systems, NFPA 90A, the International Mechanical Code and the Uniform Mechanical Code.