ASME A112.4.1 pdf download Water Heater Relief Valve Drain Tubes GENERAL 1.1 Scope This Standard establishes performance requirementsand test methods applicable to water heater relief valvedrain (or runoff) tubes for use with relief valves havinga steam rating of 105,000 Btu/hr or less 1.2 Reference Standards The following reference standards shall be used tcevaluate the product, and are cited herein. Unless...