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 5999-01-318-0227
NSN 5996-01-063-2632
NSN 5920-00-412-4813
NSN 5975-01-467-1497
NSN 6620-01-535-6925
NSN 5910-01-047-6588
NSN 6620-00-307-8557
NSN 6150-01-319-2630
NSN 5945-01-066-0710
NSN 5930-00-435-1966
NSN 6650-01-502-0254
NSN 5905-01-485-3569