A valve permitting flow in one direction only. It does not have a stem, except when equipped with a lever and weight and has no pressure adjustment. It may be inline or cartridge (manifold) design.
NSN 5935-01-074-7486
NSN 5855-01-207-8691
NSN 5915-00-611-1207
NSN 6650-01-442-5441
NSN 6135-01-375-6724
NSN 6645-00-011-9968
NSN 6650-00-900-0049
NSN 5998-01-091-6896
NSN 5910-00-050-2056
NSN 6650-01-068-3997
NSN 6110-01-612-3329
NSN 6145-01-502-9150