本标准规定了适用于将抽水马桶连接至管道系统的卫生排水管道的接头的物理、性能和测试要求。允许使用替代材料或方法，前提是所提出的材料和方法符合本标准的性能要求和意图。

This Standard establishes physical, performance, and testing requirements applicable to the joint that connects a water closet to the sanitary drain piping of a plumbing system.The use of alternate materials or methods are permitted, provided the proposed material and method complies with the performance requirements and intent of this Standard.