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 5990-00-505-1546
NSN 5895-00-424-6296
NSN 5965-00-653-4782
NSN 5998-01-424-1908
NSN 5960-01-228-7092
NSN 2925-01-253-6006
NSN 5990-00-099-0822
NSN 6135-01-505-1293
NSN 5999-01-061-1745
NSN 6150-01-495-1660
NSN 6135-01-061-1862
NSN 6105-01-533-7742