This Standard applies to new valve construction and covers quarter turn manually operated metallic valves in sizes NPS 4 1 ⁄ 4 and tubing sizes 1 1 ⁄ 4 O.D. These valves are intended for indoor installation as gas shutoff valves when installed in aboveground fuel gas piping down-stream of the gas meter outlet and upstream of the inlet connection to a gas appliance. The valves covered by this Standard are intended for service at temperatures between 32°F (0°C) and 125°F (52°C) at pressure ratings not to exceed 5 psi (0.34 bar). When so designated by the manufacturer, these valves may be installed for service outdoors and/or at temperatures below 32°F (0°C) and/or above 125°F (52°C).
