Historical
ANSI/ASME B16.40-2002
Gas Shut-Offs and Valves in Gas Distribution Systems, Manually Operated Thermoplastic
Covers manually operated thermoplastic shutoffs and valves in sizes ╜ through 6 which are suitable for use in thermoplastic distribution mains and service lines where the maximum pressure at which such distribution piping systems may be operated is in accordance with the Code of Federal Regulations (CFR) Title 49, Part 192, Transportation of Natural and Other Gas by Pipelines; Minimum Safety Standards, for temperature ranges of -20F to 100F (-29C to 38C). This standard sets forth the minimum capabilities, characteristics, and properties which a newly manufactured valve must possess in order to be considered suitable for use in piping systems indicated above with natural gas, manufactured gas, and liquefied petroleum gas.
American Society of Mechanical Engineers [asme]