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 5965-01-565-5716
NSN 2925-01-446-6976
NSN 6620-00-159-0866
NSN 6105-01-543-2893
NSN 5985-01-168-1664
NSN 5975-01-512-8525
NSN 5960-01-352-0451
NSN 5990-01-608-3505
NSN 5998-01-398-0673
NSN 5920-01-575-9204
NSN 6240-00-057-2887
NSN 5990-01-461-8969