本标准规定了适用于与蒸汽额定值为105000 Btu/hr或以下的安全阀一起使用的热水器安全阀排水（或径流）管的性能要求和试验方法。

This Standard establishes performance requirements and test methods applicable to water heater relief valve drain (or runoff) tubes for use with relief valves having a steam rating of 105,000 Btu/hr or less.