This Standard applies to manual lever operated, pressure lubricated, straight way gas shut-off valves, sizes NPS ? inch to 8 inch, of metallic construction with welded, or flanged, or threaded ends, for use with natural gas, manufactured gas, and liquefied petroleum gases (distributed as vapour with or without the admixture of air), or mixtures thereof that are suitable for use between service temperatures of ?60 °C (?76°F) to 180 °C (356°F) over a pressure range of zero to 860 kPa (125 psig) and withstand field pressure testing to a maximum pressure of 1290 kPa (187 psig).