Historical
ANSI/ASME A112.4.1-1993 (R2002)
Water Heater Relief Valve Drain Tubes
Covers the test methods and performance requirements applicable to water heater relief valve drain (or runoff) tubes for use with listed relief valves having a steam rating of 100,000 BTU per hour (Btuh) or less.
American Society of Mechanical Engineers [asme]