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 5998-01-492-0508
NSN 6645-01-376-2336
NSN 4140-00-523-9058
NSN 5999-01-075-0649
NSN 5950-00-845-1287
NSN 6645-00-727-5119
NSN 6685-01-071-2508
NSN 5996-00-265-7067
NSN 4140-01-148-0459
NSN 6145-01-605-0948
NSN 5960-01-384-4603
NSN 6135-01-466-0192