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 6240-00-334-6766
NSN 5999-00-290-5898
NSN 5975-00-523-7950
NSN 5990-01-353-3691
NSN 5996-00-939-2346
NSN 2925-01-612-0405
NSN 5835-01-384-3206
NSN 5945-01-302-7809
NSN 6645-01-552-4570
NSN 6145-00-155-5297
NSN 5935-00-251-3929
NSN 5960-00-931-0614