Properties:

A fitting that forms an angle of less than 180 degrees (3.141 radians) from the straight flow. One connecting end has standard pipe threads, or is unthreaded and designed to accommodate a pipe. The other end has external or internal machine threads (straight threads other than pipe or hose series), and is designed to facilitate a gasket, preformed packing, washer, or the like, to form a seal at the boss. It may have side or heel inlet(s). It is designed to connect a pipe or pipe fitting to a boss or boss fitting on items such as tanks, housings, valve fittings, or the like. See also elbow, pipe; and elbow, pipe to tube. Excludes connector, multiple, fluid pressure line.