Historical
ASME B16.38-2012 (R2017)
Large Metallic Valves for Gas Distribution - Manually Operated, NPS 2 1/2 (DN 65) to NPS 12 (DN 300), 125 psig (8.6 bar) Maximum
This Standard covers requirements for manually operated metallic valves in nominal sizes 21/2 (DN 65) through 12 (DN 300) having the inlet and outlet on a common centerline. These valves are intended for controlling the flow of gas from open to fully closed positions, for use in distribution and service lines where the maximum gage pressure does not exceed 125 psig (8.6 bar). Valve seats, seals, and stem packing may be nonmetallic.
American Society of Mechanical Engineers [asme]