ASME B16.40

(a) This Standard covers manually operated thermo-plastic valves in nominal valve sizes % through 12. These valves are intended for use below ground in thermoplas-tic fuel gas distribution mains and service lines. The maximum operating pressure (MOP) at which such dis- tribution piping systems may be operated is in accor-dance with the Code of Federal […]

(a) This Standard covers manually operated thermo-plastic valves in nominal valve sizes 1 ∕2 through 12.These valves are intended for use below ground in ther-moplastic 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 Transportation of Natural and Other Gas

(a) This Standard covers manually operated thermo-plastic valves in nominal valve sizes 1 ∕2 through 12. These valves are intended for use below ground in ther-moplastic 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 Transportation of Natural and Other