(a) This Standard covers manually operated thermoplastic valves in nominal valve sizes 1/2 through 12. These valves are intended for use below ground in thermoplastic fuel gas distribution mains and service lines. The maximum operating pressure (MOP) at which such distribution piping systems may be operated is in accordance with the Code of Federal Regulation (CFR) Title 49, Part 192, Transportation of Natural and Other Gas by Pipeline; Minimum Safety Standards, for temperature ranges of -20?F to 140?F (-29?C to 60?C). (b) This Standard sets qualification requirements for each basic valve design as a necessary condition for demonstrating conformance to this Standard. (c) This Standard sets requirements for newly manufactured valves for use in below ground piping systems for fuel gas [includes synthetic natural gas (SNG)], and liquefied petroleum (LP) gases (distributed as a vapor, with or without the admixture of air) or mixtures thereof.
ASME B16.40-2008 history
2019ASME B16.40-2019 Manually Operated Thermoplastic Gas Shutoffs and Valves in Gas Distribution Systems
2013ASME B16.40-2013 Manually Operated Thermoplastic Gas Shutoffs and Valves In Gas Distribution Systems
2008ASME B16.40-2008 Manually Operated Thermoplastic Gas Shutoffs and Valves in Gas Distribution Systems
2003ASME B16.40 Erratum-2003 Manually operated thermoplastic gas shutoffs and valves in gas distribution systems; Erratum to ASME B16.40-2002
2002ASME B16.40-2002 Manually operated thermoplastic gas shutoffs and valves in gas distribution systems
1985ASME B16.40-1985 Manually operated thermoplastic gas shutoffs and valves in gas distribution systems